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Cheap flights from Ontario (ONT) to Washington, D.C. (WAS) from $69

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 6/18. 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 — WAS
Jun 15 — Jun 221
From?
To?
Sat 6/15
Sat 6/22
1 adult, Economy
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The best prices from Ontario to Washington, D.C. are usually found in February or April, booked 43 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Ontario to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Washington, D.C. (WAS). 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 June 10, 2024.

Popular in

January

Cheapest in

February

Round-trip from

$234

One-way from

$69
High demand for flights, 31% potential price rise
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Best time to find cheap flights, 44% potential price drop
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From Ontario to Washington, D.C. (WAS)
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One-way flight from Ontario to Washington, D.C. (WAS)
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What is the cheapest day to fly round-trip from Ontario to Washington, D.C.?

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.. 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.?

Find a great deal and save up to 61% by booking at least 29 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Ontario to Washington, D.C. within the next two weeks, with the cheapest ticket starting at $376.

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

The best pricing can be found in the month of September. Prices to Washington, D.C. from Ontario average $357. You can even find prices in September for less than $357, as users have found deals to Washington, D.C. from as low as $109. The month of June appears to be one of the more expensive times to travel to Washington, D.C. from Ontario. Flying in the targeted month can save you up to 21%.

What is the cheapest time of day to fly from ONT to WAS?

It’s typically best to fly out from Ontario to Washington, D.C. in the afternoon. Doing so could potentially save you 40% on the flight price compared to flying at noon, which is usually more expensive.

Cheap Ontario to Washington, D.C. flights in June & July 2024

Find cheap flight options from Ontario to Washington, D.C. specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,020,828 searches. Prices were last updated on June 10, 2024.
These are some of the most attractive deals on flights from Ontario to Washington, D.C. in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Tue 7/1612:59 amONT - DCA
1 stop8h 10mFrontier
Tue 7/306:59 pmDCA - ONT
1 stop8h 00mFrontier
Deal found 6/10$154
Mon 7/112:59 amONT - DCA
1 stop8h 06mFrontier
Tue 7/166:59 pmDCA - ONT
1 stop8h 00mFrontier
Deal found 6/10$155
Wed 7/108:17 amONT - BWI
1 stop25h 19mFrontier
Tue 7/238:54 pmBWI - ONT
1 stop13h 23mFrontier
Deal found 6/9$156
Mon 7/112:59 amONT - DCA
1 stop8h 06mFrontier
Tue 7/97:00 amDCA - ONT
1 stop27h 17mFrontier
Deal found 6/9$156
Mon 7/2212:49 amONT - DCA
1 stop8h 20mFrontier
Tue 7/306:59 pmDCA - ONT
1 stop8h 00mFrontier
Deal found 6/10$158
Tue 7/912:59 amONT - DCA
1 stop8h 10mFrontier
Wed 7/177:00 amDCA - ONT
1 stop19h 39mFrontier
Deal found 6/10$159
Mon 7/812:49 amONT - DCA
1 stop8h 20mFrontier
Tue 7/166:59 pmDCA - ONT
1 stop8h 00mFrontier
Deal found 6/9$161
Mon 7/812:49 amONT - DCA
1 stop8h 20mFrontier
Tue 7/167:00 amDCA - ONT
1 stop27h 17mFrontier
Deal found 6/9$168
Mon 7/112:59 amONT - DCA
1 stop8h 06mFrontier
Mon 7/156:59 pmDCA - ONT
1 stop7h 50mFrontier
Deal found 6/10$175

Ontario to Washington, D.C. 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Washington, D.C. in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,020,828 searches. Data last updated June 10, 2024.
These are some of the most attractive deals on flights from Ontario to Washington, D.C. in 2024. If these deals don't appeal to you, be sure to come back soon for more options.
Tue 7/1612:59 amONT - DCA
1 stop8h 10mFrontier
Tue 7/306:59 pmDCA - ONT
1 stop8h 00mFrontier
Deal found 6/10$154
Mon 7/112:59 amONT - DCA
1 stop8h 06mFrontier
Tue 7/166:59 pmDCA - ONT
1 stop8h 00mFrontier
Deal found 6/10$155
Wed 7/108:17 amONT - BWI
1 stop25h 19mFrontier
Tue 7/238:54 pmBWI - ONT
1 stop13h 23mFrontier
Deal found 6/9$156
Mon 7/112:59 amONT - DCA
1 stop8h 06mFrontier
Tue 7/97:00 amDCA - ONT
1 stop27h 17mFrontier
Deal found 6/9$156
Mon 7/2212:49 amONT - DCA
1 stop8h 20mFrontier
Tue 7/306:59 pmDCA - ONT
1 stop8h 00mFrontier
Deal found 6/10$158
Tue 7/912:59 amONT - DCA
1 stop8h 10mFrontier
Wed 7/177:00 amDCA - ONT
1 stop19h 39mFrontier
Deal found 6/10$159
Mon 7/812:49 amONT - DCA
1 stop8h 20mFrontier
Tue 7/166:59 pmDCA - ONT
1 stop8h 00mFrontier
Deal found 6/9$161
Mon 7/812:49 amONT - DCA
1 stop8h 20mFrontier
Tue 7/167:00 amDCA - ONT
1 stop27h 17mFrontier
Deal found 6/9$168
Mon 7/112:59 amONT - DCA
1 stop8h 06mFrontier
Mon 7/156:59 pmDCA - ONT
1 stop7h 50mFrontier
Deal found 6/10$175

Ontario to Washington, D.C. flights leaving soon

Find last-minute flight options from Ontario to Washington, D.C. 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 3,020,828 searches. Data last updated June 10, 2024.
Check out these flights departing soon from Ontario to Washington, D.C.. Users should examine the flight details to ensure there are no surprises.
Mon 6/179:36 pmONT - DCA
1 stop11h 29mFrontier
Fri 6/216:59 pmDCA - ONT
1 stop7h 41mFrontier
Deal found 6/9$186
Mon 6/1712:59 amONT - DCA
1 stop8h 06mFrontier
Tue 6/186:59 pmDCA - ONT
1 stop15h 03mFrontier
Deal found 6/8$202
Mon 6/179:36 pmONT - DCA
1 stop11h 29mFrontier
Thu 6/206:50 pmDCA - ONT
1 stop7h 48mFrontier
Deal found 6/9$206
Mon 6/179:36 pmONT - BWI
1 stop19h 09mFrontier
Wed 6/197:09 pmBWI - ONT
2 stops14h 54mFrontier
Deal found 6/10$211
Mon 6/179:36 pmONT - DCA
1 stop11h 29mFrontier
Tue 6/186:59 pmDCA - ONT
1 stop8h 00mFrontier
Deal found 6/10$218
Tue 6/1812:59 amONT - DCA
1 stop8h 02mFrontier
Mon 7/156:59 pmDCA - ONT
1 stop7h 50mFrontier
Deal found 6/9$224
Tue 6/1812:59 amONT - DCA
1 stop8h 02mFrontier
Tue 6/257:00 amDCA - ONT
1 stop27h 02mFrontier
Deal found 6/9$236
Thu 6/2011:59 amONT - DCA
1 stop21h 10mFrontier
Mon 6/246:59 pmDCA - ONT
1 stop15h 28mFrontier
Deal found 6/9$240
Tue 6/1812:59 amONT - DCA
1 stop17h 58mFrontier
Sat 6/227:00 amDCA - ONT
1 stop19h 59mFrontier
Deal found 6/9$241

One-way flights to Washington, D.C. from Ontario

Search for one-way flight options from Ontario to Washington, D.C.. 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 3,020,828 searches. Data last updated June 10, 2024.
Some of the best available deals we've found on one-way flights from Ontario to Washington, D.C.. Users in need of a round-trip flight from Ontario to Washington, D.C. instead should update the search form at the top of page.
Tue 6/1812:59 amONT - DCA
1 stop8h 02mFrontier
Deal found 6/9$69
Mon 6/179:36 pmONT - BWI
1 stop19h 09mFrontier
Deal found 6/9$74
Mon 6/179:36 pmONT - DCA
1 stop11h 29mFrontier
Deal found 6/9$74
Mon 7/112:59 amONT - DCA
1 stop8h 06mFrontier
Deal found 6/10$77
Tue 7/3012:59 amONT - DCA
1 stop8h 10mFrontier
Deal found 6/9$78
Tue 7/912:59 amONT - DCA
1 stop8h 10mFrontier
Deal found 6/9$79
Mon 7/2212:49 amONT - BWI
1 stop16h 02mFrontier
Deal found 6/10$82
Tue 9/312:49 amONT - BWI
1 stop8h 14mFrontier
Deal found 6/10$88
Tue 9/312:49 amONT - DCA
1 stop8h 20mFrontier
Deal found 6/9$88

Find flights from Ontario to Washington, D.C. within your budget

Customize your flight search to find flights from Ontario to Washington, D.C. 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 3,020,828 searches. Data last updated June 10, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$155 - $371

Route

Depart

Return

Price

OntarioWashington, D.C. Reagan-National

ONT - DCA

ONTDCA

Ontario

Tue 7/16

1 stop8h 10m

Washington, D.C. Reagan-National

Tue 7/23

1 stop8h 00m

$155

OntarioBaltimore/Washington

ONT - BWI

ONTBWI

Ontario

Wed 7/10

1 stop25h 19m

Baltimore/Washington

Tue 7/23

1 stop13h 23m

$156

OntarioWashington, D.C. Reagan-National

ONT - DCA

ONTDCA

Ontario

Mon 7/1

1 stop8h 06m

Washington, D.C. Reagan-National

Tue 7/9

1 stop27h 17m

$156

OntarioWashington, D.C. Reagan-National

ONT - DCA

ONTDCA

Ontario

Mon 7/22

1 stop8h 20m

Washington, D.C. Reagan-National

Tue 7/30

1 stop8h 00m

$158

OntarioWashington, D.C. Reagan-National

ONT - DCA

ONTDCA

Ontario

Mon 7/15

1 stop8h 20m

Washington, D.C. Reagan-National

Tue 7/23

1 stop27h 17m

$159

OntarioWashington, D.C. Reagan-National

ONT - DCA

ONTDCA

Ontario

Fri 10/25

1 stop8h 01m

Washington, D.C. Reagan-National

Tue 10/29

1 stop10h 51m

$290

OntarioWashington, D.C. Reagan-National

ONT - DCA

ONTDCA

Ontario

Sat 9/7

2 stops13h 09m

Washington, D.C. Reagan-National

Tue 9/10

1 stop9h 31m

$295

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Tue 7/16

1 stop8h 00m

Washington, D.C. Dulles Intl

Tue 7/23

1 stop8h 14m

$324

OntarioWashington, D.C. Dulles Intl

ONT - IAD

ONTIAD

Ontario

Tue 7/16

1 stop12h 11m

Washington, D.C. Dulles Intl

Tue 7/23

2 stops19h 59m

$371

Flights are sorted by cheapest first

Deals found on 6/9

How far ahead should I book a flight from Ontario to Washington, D.C.?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Washington, D.C.. Price data was last updated on May 31, 2024.
The price you pay for your flight from Ontario to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 43 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

What is the cheapest day to fly from Ontario to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Washington, D.C.. Price data was last updated on June 9, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Ontario to Washington, D.C. flight should consider departing on Friday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from Ontario to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature and rainfall totals by month.

WAS

Temperature

35.6 - 80.6 °F

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated June 10, 2024.
Get a feel of what it's like to fly with Alaska Airlines, United Airlines and Delta from Ontario to Washington, D.C. by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,254 reviews

Comfort

7.9

Crew

8.6

Food

7.3

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,254 reviews
Alaska Airlines
8.1
Very good
9,254 reviews

Comfort

7.9

Crew

8.6

Food

7.3

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta
8.0
Very good
10,295 reviews
Alaska Airlines
8.1
Very good
9,254 reviews

Comfort

7.9

Crew

8.6

Food

7.3

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Qatar Airways
7.7
Good
4,306 reviews
Alaska Airlines
8.1
Very good
9,254 reviews

Comfort

7.9

Crew

8.6

Food

7.3

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Avianca
7.5
Good
3,563 reviews
Alaska Airlines
8.1
Very good
9,254 reviews

Comfort

7.9

Crew

8.6

Food

7.3

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines
7.4
Good
10,647 reviews
Alaska Airlines
8.1
Very good
9,254 reviews

Comfort

7.9

Crew

8.6

Food

7.3

Overall

8.1

Boarding

8.2

Entertainment

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Washington, D.C.. 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.?

    If you book a flight to Washington, D.C. from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Ontario to Washington, D.C. per day from 6 different airlines.

  • Can I find flights from Ontario to Washington, D.C. for under $200 on Cheapflights?

    Yes, there are multiple flights from Ontario to Washington, D.C. for under $200. The cheapest flight booked recently is on Frontier for just $155, but on average you can expect to pay $171.

  • Are there last-minute flights available from Ontario to Washington, D.C. for under $200?

    There are currently 20+ open flights from Ontario to Washington, D.C. within the next 7 days for less than $200.

  • What is the cheapest airline to fly from Ontario to Washington, D.C. round-trip?

    Cheapflights users have booked flights from Ontario to Washington, D.C. round-trip from $155. Users have found that Frontier is 58% cheaper than the other options available to this destination.

  • What are the most popular routes from Ontario to Washington, D.C.?

    When deciding which route to take from Ontario to Washington, D.C. consider Ontario - Baltimore/Washington, Ontario - Washington, D.C. Reagan-National or Ontario - Washington, D.C. Dulles Intl as they are the most popular.

  • What does ONT to IAD mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Ontario Airport to Washington, D.C. Dulles Intl Airport flight would often be abbreviated as a ONT to IAD flight. Baltimore/Washington Airport (BWI), Washington, D.C. Reagan-National Airport (DCA) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from Ontario to Washington, D.C. that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Washington, D.C. 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 Washington, D.C. with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Washington, D.C. 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 Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Ontario to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Washington, D.C.?

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

  • Can I find deals for business class flights from Ontario to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Ontario to Washington, D.C. 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 Washington, D.C. that allow pets onboard?

    Many airlines flying from Ontario to Washington, D.C. 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 Washington, D.C.?

    Yes, you can often find last-minute deals on Ontario to Washington, D.C. 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. flight deals updated?

    The Ontario to Washington, D.C. flight deals you see on this page were last updated on 6/10.

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

    The most popular airlines flying from Ontario to Washington, D.C. are American Airlines, Alaska Airlines and Delta. Something to consider prior to booking your flight.

  • What is the cheapest month to book a flight from Ontario to Washington, D.C.?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Washington, D.C. (average of $278). Flying from Ontario to Washington, D.C. in June is currently the most expensive (average of $382). 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.

See more FAQs

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Alternative routes for Ontario to Washington, D.C.
See prices for flight routes from nearby airports that may be better suited for you.

Los Angeles to Reagan-National flights
Los Angeles to Dulles Intl flights
San Francisco to Dulles Intl flights
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San Diego to Dulles Intl flights
Ontario to Reagan-National flights
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San Jose to Reagan-National flights
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Burbank to Dulles Intl flights
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Santa Barbara to Dulles Intl flights
Monterey to Dulles Intl flights
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Long Beach to Dulles Intl flights
Bakersfield to Reagan-National flights
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Yuma to Reagan-National flights
Yuma to Dulles Intl flights
Redding to Reagan-National flights
Santa Rosa to Reagan-National flights

Top 6 airlines flying from Ontario to Washington, D.C.

Discover the top 6 airlines that operate flights from Ontario to Washington, D.C.. 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 3,020,828 searches. Data last updated June 10, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$121Average$253FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$132Average$314FlexibilityNo cancel feeOn-time75%
FrontierCheapest$148Average$278FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$192Average$488FlexibilityNo cancel feeOn-time71%
DeltaCheapest$256Average$422FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$262Average$568FlexibilityNo cancel feeOn-time69%
Denver to Chicago flights
Boston to Los Angeles flights
Dallas to Austin flights
Los Angeles to Orlando flights
San Francisco to Chicago flights
Los Angeles to Tampa flights
Atlanta to Houston flights
Dallas to Paris flights
Dallas to Cabo San Lucas flights
Seattle to Tokyo flights
New York to Italy flights
Ontario to Warsaw Frederic Chopin Airport flights

Search flights from Ontario to Washington, D.C. by cabin class

Find flights from Ontario to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Hourly flight availability from Ontario to Washington, D.C.

Find hourly flight availability from Ontario to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 10, 2024.
0%of flight departuresEarly morningMidnight to 6 am
0%of flight departuresMorning6 am to noon
100%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Ontario to Washington, D.C.

Explore weekly flight availability from Ontario to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 10, 2024.
Sunday0daily flights
Monday1daily flight
Tuesday1daily flight
Wednesday1daily flight
Thursday1daily flight
Friday1daily flight
Saturday0daily flights

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