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

ONT — WAS
May 24 — May 311

The best prices from Ontario to Washington, D.C. are usually found in September or August, booked 32 days in advance, depart on a Thursday or Saturday and return on a Wednesday

How to find the cheapest flight from Ontario to Washington, D.C.

All the information you need to plan the best ONT to WAS flight in 2022: compare Ontario to Washington, D.C. flight prices with the expected peak season, weather and rainfall in Washington, D.C..

ONT - WAS

Price

$229 - $460

WAS

Temperature

35.6 - 80.6 °F

WAS

Rainfall

2.6 - 4 inches

Popular inMayHigh demand for flights, 26% potential price rise
Cheapest inSeptemberBest time to find cheap flights, 33% potential price drop
Round-trip from$229From Ontario to Washington, D.C. (WAS)
One-way from$218One-way flight from Ontario to Washington, D.C. (WAS)

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 10% by booking at least 23 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 $289.

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

The best pricing can be found in the month of August. Prices to Washington, D.C. from Ontario average $290. You can even find prices in August for less than $290, as users have found deals to Washington, D.C. from as low as $128. The month of December 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 30%.

When is the cheapest time to fly from Ontario to Washington, D.C. (ONT - WAS)?

It’s typically best to fly out from Ontario to Washington, D.C. in the afternoon. Doing so could potentially save you 46% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap flights from Ontario to Washington, D.C. in May, June 2022

The best prices found for ONT to WAS flights for May, June
Jun 2 - Jun 5
ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

18h 50m
DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

16h 28m
$290

Frontier

View Deal

Deal found 5/16/22

May 25 - Jun 3
ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

13h 50m
DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

15h 34m
$297

Frontier

View Deal

Deal found 5/16/22

May 31 - Jun 8
ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

20h 04m
DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

14h 43m
$317

Frontier

View Deal

Deal found 5/16/22

Ontario to Washington, D.C. 2022 flight deals

Cheap flights to Washington, D.C. from Ontario found for this year
Jun 2 - Jun 5
ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

18h 50m
DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

16h 28m
$290

Frontier

View Deal

Deal found 5/16/22

May 25 - Jun 3
ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

13h 50m
DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

15h 34m
$297

Frontier

View Deal

Deal found 5/16/22

May 31 - Jun 8
ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

20h 04m
DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

14h 43m
$317

Frontier

View Deal

Deal found 5/16/22

Cheap American Airlines flights from Ontario to Washington, D.C.

Sep 27 - Oct 1
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

9h 05m
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

9h 51m
$434

American Airlines

View Deal

Deal found 5/16/22

Sep 27 - Oct 1
ONT

Ontario

BWI

Baltimore/Washington

1 stop

9h 52m
BWI

Baltimore/Washington

ONT

Ontario

1 stop

7h 19m
$451

American Airlines

View Deal

Deal found 5/16/22

Sep 27 - Oct 1
ONT

Ontario

BWI

Baltimore/Washington

1 stop

9h 52m
BWI

Baltimore/Washington

ONT

Ontario

2 stops

11h 56m
$455

American Airlines

View Deal

Deal found 5/16/22

Cheap United Airlines flights from Ontario to Washington, D.C.

Nov 1 - Nov 10
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

2 stops

16h 25m
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

9h 23m
$426

United Airlines

View Deal

Deal found 5/18/22

Sep 7 - Sep 13
ONT

Ontario

IAD

Washington, D.C. Dulles Intl

1 stop

7h 42m
IAD

Washington, D.C. Dulles Intl

ONT

Ontario

1 stop

9h 09m
$436

United Airlines

View Deal

Deal found 5/17/22

Sep 21 - Sep 27
ONT

Ontario

BWI

Baltimore/Washington

2 stops

20h 08m
BWI

Baltimore/Washington

ONT

Ontario

1 stop

18h 24m
$438

United Airlines

View Deal

Deal found 5/18/22

Last minute flights from Ontario to Washington, D.C.

Late deals on return flights to Washington, D.C. from Ontario, departing today and this week
May 25 - Jun 3
ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

13h 50m
DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

15h 34m
$297

Frontier

View Deal

Deal found 5/16/22

May 25 - May 31
ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

13h 50m
DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

9h 25m
$322

Frontier

View Deal

Deal found 5/16/22

May 26 - Jun 3
ONT

Ontario

DCA

Washington, D.C. Reagan-National

1 stop

22h 50m
DCA

Washington, D.C. Reagan-National

ONT

Ontario

1 stop

9h 20m
$331

Frontier

View Deal

Deal found 5/16/22

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

The cheapest one-way flights from Ontario to Washington, D.C.
May 30
ONT

Ontario

BWI

Baltimore/Washington

1 stop

12h 57m
$138

Frontier

View Deal

Deal found 5/16/22

May 25
ONT

Ontario

BWI

Baltimore/Washington

1 stop

12h 57m
$161

Frontier

View Deal

Deal found 5/18/22

May 28
ONT

Ontario

BWI

Baltimore/Washington

1 stop

12h 43m
$175

Frontier

View Deal

Deal found 5/17/22

Related info for your journey

Useful info, stats and facts about Ontario to Washington, D.C. flights.

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 8 different airlines.

Which airlines flying from Ontario to Washington, D.C. have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like American Airlines, United Airlines, and Delta flying from Ontario to Washington, D.C. have implemented new flexible cancellation policies.

Can I find flights from Ontario to Washington, D.C. for under $400 on Cheapflights?

Yes, there are multiple flights from Ontario to Washington, D.C. for under $400. The cheapest flight booked recently is on Frontier for just $366, but on average you can expect to pay $418.

Are there last-minute flights available from Ontario to Washington, D.C. for under $300?

There are currently 20+ open flights from Ontario to Washington, D.C. within the next 7 days for less than $300.

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

Cheapflights users have booked flights from Ontario to Washington, D.C. round-trip from $366. Other airlines that can offer you cheap pricing are United Airlines, from $426, and American Airlines, from $434.

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

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $138. Users have also found prices from $217 and $218 on American Airlines and United Airlines, respectively.

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 - Washington, D.C. Reagan-National, Ontario - Washington, D.C. Dulles Intl or Ontario - Baltimore/Washington as they are the most popular.

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 are the cheapest flights from Ontario to Washington, D.C.?

While on average a flight from Ontario to Washington, D.C. is generally $674, our data shows the cheapest flight currently is $122. When looking at the most popular route, (Ontario - Washington, D.C. Reagan-National), you can expect to pay $346 for that flight.

Top 5 airlines flying from Ontario to Washington, D.C.

The chart below displays the airlines Cheapflights users traveling from Ontario to Washington, D.C. choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
FrontierCheapest$85Average$380FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search Frontier flights
United AirlinesCheapest$117Average$461FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
Alaska AirlinesCheapest$129Average$469FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
JetBlueCheapest$162Average$385FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search JetBlue flights
DeltaCheapest$179Average$388FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights