District of Columbia

$61+ Cheap flights from Ontario (ONT) to District of Columbia

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 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BWI
Jan 26 — Feb 21
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Cheap flight deals from Ontario to District of Columbia

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to District of Columbia (USDC). 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 January 21, 2025.

Round-trip from

$230
(Frontier)

One-way from

$61
(Mytrip)
From Ontario to District of Columbia
One-way flight from Ontario to District of Columbia

Find flight deals from Ontario to District of Columbia

Cheapest flights from Ontario to District of Columbia
Explore the most affordable flight options available from Ontario to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Frontier deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1012:59 amONT - DCA
1 stop8h 00mFrontier
Wed 4/166:00 pmDCA - ONT
1 stop8h 59mFrontier
Deal found 1/21$230
This Expedia deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/197:00 amONT - DCA
2 stops11h 59mMultiple Airlines
Tue 2/251:03 pmDCA - ONT
1 stop13h 56mMultiple Airlines
Deal found 1/20$312
This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/17:05 amONT - DCA
1 stop9h 33mDelta
Tue 3/45:10 pmDCA - ONT
1 stop9h 41mDelta
Deal found 1/21$327
This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/151:05 pmONT - IAD
1 stop8h 15mDelta
Tue 2/257:20 amIAD - ONT
1 stop8h 04mDelta
Deal found 1/21$327
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/86:00 amONT - IAD
2 stops10h 35mAmerican Airlines
Tue 2/115:00 amIAD - ONT
2 stops9h 58mAmerican Airlines
Deal found 1/20$337
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/71:40 pmONT - IAD
1 stop6h 43mUnited Airlines
Tue 3/118:30 amIAD - ONT
1 stop7h 14mUnited Airlines
Deal found 1/20$343
This American Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/127:00 amONT - DCA
1 stop8h 59mAmerican Airlines
Mon 2/176:13 amDCA - ONT
1 stop10h 45mAmerican Airlines
Deal found 1/21$352
This Alaska Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/196:00 amONT - IAD
1 stop8h 48mAlaska Airlines
Wed 2/267:00 amIAD - ONT
1 stop17h 27mAlaska Airlines
Deal found 1/20$374
This Southwest deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/202:50 pmONT - IAD
1 stop6h 55mSouthwest
Tue 3/253:40 pmIAD - ONT
1 stop10h 25mSouthwest
Deal found 1/21$377
This Southwest deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/98:15 pmONT - DCA
2 stops15h 35mSouthwest
Tue 3/116:00 amDCA - ONT
1 stop8h 05mSouthwest
Deal found 1/20$382
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/56:15 amONT - DCA
1 stop7h 37mUnited Airlines
Sun 2/94:13 pmDCA - ONT
1 stop7h 38mUnited Airlines
Deal found 1/21$427
This Alaska Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/86:00 amONT - DCA
1 stop12h 59mAlaska Airlines
Tue 3/115:15 pmDCA - ONT
2 stops31h 12mAlaska Airlines
Deal found 1/21$488

Find flights from Ontario to District of Columbia within your budget

Customize your flight search to find flights from Ontario to District of Columbia 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 2,558,603 searches. Data last updated January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioWashington, D.C.

ONT - DCA

ONTDCA

Ontario

Thu 2/13

12:59 am-12:03 pm

1 stop8h 04m

Washington, D.C. Reagan-National

Mon 3/24

1:03 pm-12:09 am

1 stop14h 06m

$230

OntarioWashington, D.C.

ONT - DCA

ONTDCA

Ontario

Wed 4/30

6:00 am-9:59 pm

2 stops12h 59m

Washington, D.C. Reagan-National

Fri 5/2

7:00 am-11:26 am

1 stop7h 26m

$307

OntarioWashington, D.C.

ONT - DCA

ONTDCA

Ontario

Tue 2/18

10:50 pm-8:32 am

1 stop6h 42m

Washington, D.C. Reagan-National

Sat 2/22

6:13 am-1:58 pm

1 stop10h 45m

$327

OntarioWashington, D.C.

ONT - IAD

ONTIAD

Ontario

Sat 2/15

1:05 pm-12:20 am

1 stop8h 15m

Washington, D.C. Dulles Intl

Tue 2/25

7:20 am-12:24 pm

1 stop8h 04m

$327

OntarioWashington, D.C.

ONT - DCA

ONTDCA

Ontario

Thu 2/6

1:00 pm-10:39 pm

1 stop6h 39m

Washington, D.C. Reagan-National

Mon 2/10

6:59 am-11:50 am

1 stop7h 51m

$330

OntarioWashington, D.C.

ONT - IAD

ONTIAD

Ontario

Sat 2/8

6:00 am-7:35 pm

2 stops10h 35m

Washington, D.C. Dulles Intl

Tue 2/11

5:00 am-11:58 am

2 stops9h 58m

$337

OntarioWashington, D.C.

ONT - IAD

ONTIAD

Ontario

Fri 3/7

1:40 pm-11:23 pm

1 stop6h 43m

Washington, D.C. Dulles Intl

Tue 3/11

8:30 am-12:44 pm

1 stop7h 14m

$343

OntarioWashington, D.C.

ONT - IAD

ONTIAD

Ontario

Wed 2/19

6:00 am-5:48 pm

1 stop8h 48m

Washington, D.C. Dulles Intl

Wed 2/26

7:00 am-9:27 pm

1 stop17h 27m

$374

OntarioWashington, D.C.

ONT - IAD

ONTIAD

Ontario

Thu 3/20

2:50 pm-12:45 am

1 stop6h 55m

Washington, D.C. Dulles Intl

Tue 3/25

3:40 pm-11:05 pm

1 stop10h 25m

$377

OntarioWashington, D.C.

ONT - DCA

ONTDCA

Ontario

Fri 3/7

5:40 am-3:45 pm

1 stop7h 05m

Washington, D.C. Reagan-National

Tue 3/11

4:00 pm-10:40 pm

2 stops9h 40m

$382

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 23 results
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Best time to book a flight from Ontario to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia 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.

Travel insights for flights from Ontario to District of Columbia

Get recent, data-driven insights about flights from Ontario to District of Columbia including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Ontario to District of Columbia?

Currently, August is the cheapest month in which you can book a flight from Ontario to District of Columbia (average of $241). Flying from Ontario to District of Columbia in March is currently the most expensive (average of $290). 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.

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

Find hourly flight availability from Ontario to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to District of Columbia as you normally would.

Rainfall in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in District of Columbia ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit District of Columbia when rainfall is around 2.6 in.

Temperature in District of Columbia by month

Plan your trip to District of Columbia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to District of Columbia, 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 District of Columbia

Get insights into the airlines that provide service to District of Columbia. 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 District of Columbia. Reviews last updated January 21, 2025.
Get a feel of what it's like to fly with Delta, Southwest and United Airlines from Ontario to District of Columbia 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.
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.1
Very good
4,662 reviews
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
9,706 reviews
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
8,521 reviews
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
8,984 reviews
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.2
Good
10,000 reviews
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Ontario to District of Columbia. 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 District of Columbia?

    Ontario (ONT) is the airport you will fly out of if you book a flight from Ontario to District of Columbia. It is only a 3.1 mi journey to Ontario (ONT) from Ontario’s city center.

  • What are the cheapest airlines to fly from Ontario to District of Columbia one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $61. Users have also found prices from $163 and $164 on Alaska Airlines and American Airlines, respectively.

  • What are the cheapest flights from Ontario to District of Columbia?

    Looking at all options, your cheapest flight can be booked for $649. While the most popular route (Ontario - Washington, D.C. Reagan-National) can be booked for $128 on average our data indicates $773 when flying from Ontario to District of Columbia.

  • Can I find deals for flights from Ontario to District of Columbia that include hotel bookings?

    Yes. In addition to deals on Ontario to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to District of Columbia?

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

  • Can I find deals for business class flights from Ontario to District of Columbia?

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

  • What is the cheapest month to book a flight from Ontario to District of Columbia?

    Currently, August is the cheapest month in which you can book a flight from Ontario to District of Columbia (average of $241). Flying from Ontario to District of Columbia in March is currently the most expensive (average of $290). 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 District of Columbia

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Ontario to District of Columbia

Discover the top 7 airlines that operate flights from Ontario to District of Columbia. 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 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$148Average$294FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$151Average$251FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$168Average$288FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$197Average$518FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$256Average$504FlexibilityNo cancel feeOn-time69%
DeltaCheapest$262Average$440FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$301Average$492FlexibilityNo cancel feeOn-time63%
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