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Cheap flights from Ontario (ONT) to Dulles Intl (IAD) from $144

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — IAD
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
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The best prices from Ontario to Washington, D.C. Dulles Intl are usually found in January or February, booked 60 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

Cheap flight deals from Ontario to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 16, 2024.

Popular in

June

Cheapest in

January

Round-trip from

$235

One-way from

$190
High demand for flights, 39% potential price rise
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Best time to find cheap flights, 53% potential price drop
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From Ontario to Washington, D.C. Dulles Intl
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One-way flight from Ontario to Washington, D.C. Dulles Intl
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What is the cheapest day to fly round-trip from Ontario to Washington, D.C. Dulles Intl Airport?

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Washington, D.C. Dulles Intl Airport. Check prices with Cheapflights to find a great deal for your trip.

How far in advance should I book a flight from Ontario to Washington, D.C. Dulles Intl Airport?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 29 days in advance, which can save you up to 67% on flights from Ontario to Washington, D.C. Dulles Intl Airport compared to booking the week you need them. Waiting 29 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $376. For sooner than that we have options available in the next 3 days from $597.

What is the cheapest month to fly from Ontario to Washington, D.C. Dulles Intl Airport?

Flights from Ontario to Washington, D.C. Dulles Intl Airport lean towards being more expensive in June. Prices are generally better when you fly from Ontario to Washington, D.C. Dulles Intl Airport in September, with the cheapest ticket starting at $109.

When is the cheapest time to fly from Ontario to Washington, D.C. Dulles Intl Airport (ONT - IAD)?

A simple way to save on the total cost of your ticket is to fly from Ontario to Washington, D.C. Dulles Intl Airport in the afternoon. If you’re flexible enough to do this you can expect to save up to 37% on your trip compared to booking a flight at noon.

Cheap American Airlines flights from Ontario to Dulles Intl

Explore cheap flight options specifically provided by American Airlines for the route between Ontario and Dulles Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Take a peek at the cheapest American Airlines flights we've detected traveling from Ontario to Washington, D.C.. Make sure to double check the flight details before booking.
Sat 9/711:00 pmONT - IAD
1 stop6h 36mAmerican Airlines
Tue 9/105:31 pmIAD - ONT
1 stop7h 29mAmerican Airlines
Deal found 5/15$287
Fri 8/1610:35 pmONT - IAD
1 stop7h 09mAmerican Airlines
Mon 8/195:29 pmIAD - ONT
1 stop7h 34mAmerican Airlines
Deal found 5/16$289
Sat 9/2811:00 pmONT - IAD
1 stop6h 36mAmerican Airlines
Tue 10/15:31 pmIAD - ONT
2 stops8h 55mAmerican Airlines
Deal found 5/15$292
Wed 5/2912:50 pmONT - IAD
1 stop7h 47mAmerican Airlines
Tue 6/43:27 pmIAD - ONT
2 stops10h 02mAmerican Airlines
Deal found 5/15$294
Mon 8/1911:59 pmONT - IAD
2 stops9h 39mAmerican Airlines
Wed 8/281:10 pmIAD - ONT
2 stops11h 53mAmerican Airlines
Deal found 5/15$299
Mon 6/1010:45 pmONT - IAD
1 stop7h 13mAmerican Airlines
Wed 6/125:43 pmIAD - ONT
1 stop8h 16mAmerican Airlines
Deal found 5/15$321
Mon 6/2410:45 pmONT - IAD
1 stop7h 13mAmerican Airlines
Mon 7/19:28 amIAD - ONT
2 stops12h 29mAmerican Airlines
Deal found 5/15$326
Mon 6/107:26 pmONT - IAD
2 stops10h 32mAmerican Airlines
Wed 6/125:43 pmIAD - ONT
1 stop8h 16mAmerican Airlines
Deal found 5/15$328
Mon 8/1910:35 pmONT - IAD
1 stop7h 09mAmerican Airlines
Wed 8/281:10 pmIAD - ONT
1 stop10h 11mAmerican Airlines
Deal found 5/15$331

Cheap Delta flights from Ontario to Dulles Intl

Explore cheap flight options specifically provided by Delta for the route between Ontario and Dulles Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Browse through some of the cheapest Delta flights traveling from Ontario to Washington, D.C.. Check back soon if you're not seeing flights that suit your needs.
Thu 5/301:20 pmONT - IAD
1 stop7h 33mDelta
Thu 6/276:00 amIAD - ONT
1 stop7h 20mDelta
Deal found 5/15$290
Sat 9/77:00 amONT - IAD
2 stops12h 46mDelta
Tue 9/1012:35 pmIAD - ONT
1 stop9h 47mDelta
Deal found 5/15$295
Tue 8/610:59 pmONT - IAD
1 stop8h 00mDelta
Tue 8/137:30 amIAD - ONT
1 stop7h 53mDelta
Deal found 5/15$314
Sat 6/81:25 pmONT - IAD
1 stop7h 34mDelta
Sat 6/226:00 amIAD - ONT
1 stop7h 20mDelta
Deal found 5/15$324
Sat 7/206:55 amONT - IAD
2 stops13h 08mDelta
Tue 7/236:00 amIAD - ONT
1 stop7h 10mDelta
Deal found 5/15$329
Wed 5/296:42 pmONT - IAD
2 stops13h 23mDelta
Tue 6/49:40 amIAD - ONT
2 stops13h 26mDelta
Deal found 5/16$334
Sat 6/81:25 pmONT - IAD
1 stop7h 34mDelta
Tue 6/117:15 amIAD - ONT
1 stop8h 02mDelta
Deal found 5/15$338
Thu 5/306:42 pmONT - IAD
1 stop8h 43mDelta
Mon 6/37:15 amIAD - ONT
1 stop7h 58mDelta
Deal found 5/16$354
Fri 5/311:20 pmONT - IAD
1 stop7h 33mDelta
Sat 6/16:00 amIAD - ONT
1 stop8h 39mDelta
Deal found 5/16$358

Cheap Ontario to Dulles Intl flights in May & June 2024

Find cheap flight options from Ontario to Dulles Intl specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 2024.
These are some of the best deals we've found on flights to Washington, D.C. in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Thu 5/301:20 pmONT - IAD
1 stop7h 33mDelta
Thu 6/276:00 amIAD - ONT
1 stop7h 20mDelta
Deal found 5/15$290
Wed 5/2912:50 pmONT - IAD
1 stop7h 47mAmerican Airlines
Tue 6/43:27 pmIAD - ONT
2 stops10h 02mAmerican Airlines
Deal found 5/15$294
Sat 6/296:25 pmONT - IAD
1 stop8h 00mUnited Airlines
Tue 7/97:01 amIAD - ONT
1 stop8h 14mUnited Airlines
Deal found 5/15$314
Fri 6/76:25 pmONT - IAD
1 stop8h 00mUnited Airlines
Tue 7/167:01 amIAD - ONT
1 stop8h 14mUnited Airlines
Deal found 5/15$319
Mon 6/1010:45 pmONT - IAD
1 stop7h 13mAmerican Airlines
Wed 6/125:43 pmIAD - ONT
1 stop8h 16mAmerican Airlines
Deal found 5/15$321
Sat 6/81:25 pmONT - IAD
1 stop7h 34mDelta
Sat 6/226:00 amIAD - ONT
1 stop7h 20mDelta
Deal found 5/15$324
Mon 6/2410:45 pmONT - IAD
1 stop7h 13mAmerican Airlines
Mon 7/19:28 amIAD - ONT
2 stops12h 29mAmerican Airlines
Deal found 5/15$326
Mon 6/107:26 pmONT - IAD
2 stops10h 32mAmerican Airlines
Wed 6/125:43 pmIAD - ONT
1 stop8h 16mAmerican Airlines
Deal found 5/15$328
Wed 5/296:42 pmONT - IAD
2 stops13h 23mDelta
Tue 6/49:40 amIAD - ONT
2 stops13h 26mDelta
Deal found 5/16$334

Ontario to Dulles Intl 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Dulles Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
These are some of the best deals we've found on flights to Washington, D.C. in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Sat 9/711:00 pmONT - IAD
1 stop6h 36mAmerican Airlines
Tue 9/105:31 pmIAD - ONT
1 stop7h 29mAmerican Airlines
Deal found 5/15$287
Fri 8/1610:35 pmONT - IAD
1 stop7h 09mAmerican Airlines
Mon 8/195:29 pmIAD - ONT
1 stop7h 34mAmerican Airlines
Deal found 5/16$289
Thu 5/301:20 pmONT - IAD
1 stop7h 33mDelta
Thu 6/276:00 amIAD - ONT
1 stop7h 20mDelta
Deal found 5/15$290
Sat 9/2811:00 pmONT - IAD
1 stop6h 36mAmerican Airlines
Tue 10/15:31 pmIAD - ONT
2 stops8h 55mAmerican Airlines
Deal found 5/15$292
Wed 5/2912:50 pmONT - IAD
1 stop7h 47mAmerican Airlines
Tue 6/43:27 pmIAD - ONT
2 stops10h 02mAmerican Airlines
Deal found 5/15$294
Sat 9/77:00 amONT - IAD
2 stops12h 46mDelta
Tue 9/1012:35 pmIAD - ONT
1 stop9h 47mDelta
Deal found 5/15$295
Mon 8/1911:59 pmONT - IAD
2 stops9h 39mAmerican Airlines
Wed 8/281:10 pmIAD - ONT
2 stops11h 53mAmerican Airlines
Deal found 5/15$299
Tue 8/610:59 pmONT - IAD
1 stop8h 00mDelta
Wed 8/146:00 amIAD - ONT
1 stop8h 10mDelta
Deal found 5/15$314
Fri 6/76:25 pmONT - IAD
1 stop8h 00mUnited Airlines
Tue 7/167:01 amIAD - ONT
1 stop8h 14mUnited Airlines
Deal found 5/15$319

Ontario to Dulles Intl flights leaving soon

Find last-minute flight options from Ontario to Dulles Intl for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Book one of these great deals on flights from Ontario to Washington, D.C.. Users should examine the flight details to ensure there are no surprises.
Wed 5/2212:50 pmONT - IAD
1 stop8h 05mDelta
Wed 5/292:59 pmIAD - ONT
1 stop8h 07mDelta
Deal found 5/15$417
Wed 5/226:42 pmONT - IAD
2 stops13h 23mDelta
Wed 5/299:40 amIAD - ONT
2 stops13h 26mDelta
Deal found 5/15$427
Thu 5/231:20 pmONT - IAD
1 stop7h 33mDelta
Tue 5/287:15 amIAD - ONT
1 stop7h 58mDelta
Deal found 5/15$451
Tue 5/211:20 pmONT - IAD
1 stop7h 33mDelta
Fri 5/317:15 amIAD - ONT
1 stop7h 58mDelta
Deal found 5/16$457
Tue 5/216:50 amONT - IAD
2 stops13h 02mDelta
Fri 5/317:15 amIAD - ONT
1 stop7h 58mDelta
Deal found 5/16$462
Wed 5/222:15 pmONT - IAD
1 stop6h 15mSouthwest
Thu 5/234:25 pmIAD - ONT
1 stop9h 05mSouthwest
Deal found 5/15$475
Sat 5/2510:00 amONT - IAD
1 stop10h 59mAlaska Airlines
Thu 5/309:05 amIAD - ONT
1 stop9h 21mAlaska Airlines
Deal found 5/14$511
Thu 5/236:25 pmONT - IAD
1 stop8h 00mUnited Airlines
Wed 5/297:00 amIAD - ONT
1 stop8h 45mUnited Airlines
Deal found 5/15$517
Wed 5/226:42 pmONT - IAD
2 stops13h 23mDelta
Thu 5/306:11 pmIAD - ONT
2 stops8h 32mDelta
Deal found 5/16$531

One-way flights to Dulles Intl from Ontario

Search for one-way flight options from Ontario to Dulles Intl. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Users traveling one-way from Ontario to Washington, D.C. can select one of these great deals. Users can also find round-trip Ontario to Washington, D.C. flights by using the search form above.
Wed 6/510:45 pmONT - IAD
1 stop7h 13mAmerican Airlines
Deal found 5/15$144
Sat 7/2711:20 amONT - IAD
1 stop7h 16mDelta
Deal found 5/15$145
Tue 6/117:26 pmONT - IAD
2 stops10h 32mAmerican Airlines
Deal found 5/15$150
Wed 6/2610:00 pmONT - IAD
1 stop7h 45mDelta
Deal found 5/16$159
Mon 6/2410:45 pmONT - IAD
1 stop7h 13mAmerican Airlines
Deal found 5/15$178
Sat 6/81:25 pmONT - IAD
1 stop7h 34mDelta
Deal found 5/15$179
Mon 6/175:00 pmONT - IAD
2 stops13h 13mDelta
Deal found 5/16$184
Wed 6/1910:45 pmONT - IAD
1 stop7h 13mAmerican Airlines
Deal found 5/15$188
Tue 6/186:30 pmONT - IAD
1 stop8h 30mDelta
Deal found 5/15$189

Find flights from Ontario to Dulles Intl within your budget

Customize your flight search to find flights from Ontario to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$287 - $507

Route

Depart

Return

Price

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Sat 9/7

1 stop6h 36m

Washington, D.C. Dulles Intl

Tue 9/10

1 stop7h 29m

$287

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Fri 8/16

1 stop7h 09m

Washington, D.C. Dulles Intl

Mon 8/19

1 stop7h 34m

$289

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Thu 5/30

1 stop7h 33m

Washington, D.C. Dulles Intl

Thu 6/27

1 stop7h 20m

$290

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Sat 9/28

1 stop6h 36m

Washington, D.C. Dulles Intl

Tue 10/1

2 stops8h 55m

$292

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Wed 5/29

1 stop7h 47m

Washington, D.C. Dulles Intl

Tue 6/4

2 stops10h 02m

$294

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Sat 9/7

2 stops12h 46m

Washington, D.C. Dulles Intl

Tue 9/10

1 stop9h 47m

$295

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Tue 8/6

1 stop8h 00m

Washington, D.C. Dulles Intl

Tue 8/13

1 stop7h 53m

$314

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Fri 6/7

1 stop8h 00m

Washington, D.C. Dulles Intl

Tue 7/16

1 stop8h 14m

$319

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Tue 10/8

2 stops14h 59m

Washington, D.C. Dulles Intl

Fri 10/11

1 stop18h 48m

$507

Flights are sorted by cheapest first

Deals found on 5/15

When is the best time to book a flight from Ontario to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Dulles Intl. Price data was last updated on May 10, 2024.
The price you pay for your flight from Ontario to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 60 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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When is the cheapest time to fly from Ontario to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Dulles Intl. Price data was last updated on May 12, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Ontario to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to Dulles Intl by month

Plan your trip from Ontario to Dulles Intl by taking into account the cheapest months to travel. The average price of a one-way flight from Ontario to Dulles Intl is currently $168 while a round-trip flight costs $321. Price data was last updated on May 12, 2024.

Currently, September is the cheapest month in which you can book a flight from Ontario to Washington, D.C. Dulles Intl Airport (average of $280). Flying from Ontario to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $397). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$308

February

$303

March

$358

April

$337

May

$336

June

$397

July

$376

August

$298

September

$280

October

$303

November

$328

December

$293

Temperature and rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature and rainfall totals by month.

WAS

Temperature

35.6 - 80.6 °F

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated May 16, 2024.
Read reviews from past customers who have flown American Airlines, Delta and United Airlines from Ontario to Washington, D.C.. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
6,040 reviews
Check prices

Overall

8.2

Comfort

8.1

Entertainment

7.8

Food

7.3

Crew

8.7

Boarding

8.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.2
Very good
6,040 reviews
Southwest
8.2
Very good
6,040 reviews
Check prices

Overall

8.2

Comfort

8.1

Entertainment

7.8

Food

7.3

Crew

8.7

Boarding

8.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.1
Very good
9,157 reviews
Southwest
8.2
Very good
6,040 reviews
Check prices

Overall

8.2

Comfort

8.1

Entertainment

7.8

Food

7.3

Crew

8.7

Boarding

8.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
10,673 reviews
Southwest
8.2
Very good
6,040 reviews
Check prices

Overall

8.2

Comfort

8.1

Entertainment

7.8

Food

7.3

Crew

8.7

Boarding

8.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

WestJet
7.5
Good
2,919 reviews
Southwest
8.2
Very good
6,040 reviews
Check prices

Overall

8.2

Comfort

8.1

Entertainment

7.8

Food

7.3

Crew

8.7

Boarding

8.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Avianca
7.5
Good
3,765 reviews
Southwest
8.2
Very good
6,040 reviews
Check prices

Overall

8.2

Comfort

8.1

Entertainment

7.8

Food

7.3

Crew

8.7

Boarding

8.3

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

Find useful and relevant information for your journey from Ontario to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Washington, D.C. Dulles Intl?

    Most people fly from Ontario (ONT) if they book a flight from Ontario to Washington, D.C. Dulles Intl. On average, Ontario has 0 outbound flights to Washington, D.C. Dulles Intl per day from 5 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • Can I find flights from Ontario to Washington, D.C. Dulles Intl Airport for under $300 on Cheapflights?

    Yes, there are multiple flights from Ontario to Washington, D.C. Dulles Intl Airport for under $300. The cheapest flight booked recently is on American Airlines for just $287, but on average you can expect to pay $317.

  • Are there last-minute flights available from Ontario to Washington, D.C. Dulles Intl Airport for under $500?

    There are currently 20+ open flights from Ontario to Washington, D.C. Dulles Intl Airport within the next 7 days for less than $500.

  • What are the cheapest airlines flying from Ontario to Washington, D.C. Dulles Intl Airport round-trip?

    Cheapflights users have booked flights from Ontario to Washington, D.C. Dulles Intl Airport round-trip from $287. Other airlines that can offer you cheap pricing are Delta, from $290, and United Airlines, from $319. Users have found that American Airlines is 29% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Ontario to Washington, D.C. Dulles Intl Airport one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $144. Delta flights start at $145 while deals on United Airlines start at $195 one-way.

  • What are the most popular airlines that fly from Ontario to Washington, D.C. Dulles Intl Airport?

    When booking a flight from Ontario to Washington, D.C. Dulles Intl Airport, you may want to consider flying on American Airlines, Alaska Airlines or Delta as they are the most popular for this route.

  • What does ONT to IAD mean?

    ONT and IAD are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. ONT to IAD refers to a flight route from Ontario Airport to Washington, D.C. Dulles Intl Airport.

  • Can I find deals for flights from Ontario to Dulles Intl that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Dulles Intl flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Dulles Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Dulles Intl flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Ontario to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Ontario to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Dulles Intl.

  • Can I find deals for business class flights from Ontario to Dulles Intl?

    Yes. Cheapflights offers flight deals from Ontario to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Ontario to Dulles Intl that allow pets onboard?

    Many airlines flying from Ontario to Dulles Intl offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Dulles Intl?

    Yes, you can often find last-minute deals on Ontario to Dulles Intl flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Ontario to Washington, D.C. Dulles Intl Airport flight deals updated?

    The Ontario to Washington, D.C. Dulles Intl Airport flight deals you see on this page were last updated on 5/16.

See more FAQs

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Alternative routes for Ontario to Dulles Intl
See prices for flight routes from nearby airports that may be better suited for you.

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Top 5 airlines flying from Ontario to Dulles Intl

Discover the top 5 airlines that operate flights from Ontario to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$132Average$234FlexibilityNo cancel feeOn-time75%
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FrontierCheapest$156Average$255FlexibilityNo cancel feeOn-time62%
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United AirlinesCheapest$189Average$516FlexibilityNo cancel feeOn-time69%
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American AirlinesCheapest$193Average$445FlexibilityNo cancel feeOn-time71%
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DeltaCheapest$256Average$389FlexibilityNo cancel feeOn-timeN/A
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Search flights from Ontario to Dulles Intl by cabin class

Find flights from Ontario to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Dulles Intl?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario to Dulles Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Dulles Intl?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Dulles Intl from Ontario.

Can Cheapflights find flights from Ontario to Dulles Intl with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario to Dulles Intl, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Ontario to Dulles Intl become cheaper?

Yes! Start tracking prices for Ontario to Dulles Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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