Cheap flights from Ontario to Washington (ONT - WAS)

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

How to find the cheapest flight from
Ontario (ONT) to Washington (WAS)

All the information you need to plan the best ONT to WAS flight in 2021: compare Ontario to Washington flight prices with the expected peak season, weather and rainfall in Washington.
ONT - WAS
Price
$229 - $460
WAS
Temperature
35.6 - 80.6 °F
WAS
Precipitation
2.6 - 4 inches

Popular in

May

High demand for flights, 26% potential price rise

Cheapest in

September

Best time to find cheap flights, 33% potential price drop

Round-trip from

$229

From Ontario to Washington (WAS)

One-way from

$70

One-way flight from Ontario to Washington (WAS)

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest month to fly from Ontario to Washington?

The best pricing can be found in the month of August. Prices to Washington from Ontario average $290. You can even find prices in August for less than $290, as users have found deals to Washington from as low as $128. The month of December appears to be one of the more expensive times to travel to Washington from Ontario. Flying in the targeted month can save you up to 30%.

How far in advance should I book a flight from Ontario to Washington?

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 within the next two weeks, with the cheapest ticket starting at $289.

What is the cheapest day to fly round-trip from Ontario to Washington?

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. Check prices with Cheapflights to find a great deal for your trip.

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

It’s typically best to fly out from Ontario to Washington in the afternoon. Doing so could potentially save you 47% on the flight price compared to flying at noon, which is usually more expensive.

Cheap flights from Ontario to Washington in October, November 2021

The best prices found for ONT to WAS flights for October, November
30 Oct - 6 Nov
$128pp
ONT
Ontario
Frontier
 
1 STOP
DCA
Washington Reagan-National
DCA
Washington Reagan-National
Frontier
 
1 STOP
ONT
Ontario
16 Nov - 20 Nov
$133pp
ONT
Ontario
Frontier
 
1 STOP
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Frontier
 
1 STOP
ONT
Ontario
6 Nov - 13 Nov
$133pp
ONT
Ontario
Frontier
 
1 STOP
DCA
Washington Reagan-National
DCA
Washington Reagan-National
Frontier
 
1 STOP
ONT
Ontario

Ontario to Washington 2021 flight deals

Cheap flights to Washington from Ontario found for this year
1 Dec - 4 Dec
$128pp
ONT
Ontario
Frontier
 
1 STOP
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Frontier
 
1 STOP
ONT
Ontario
1 Dec - 11 Dec
$128pp
ONT
Ontario
Frontier
 
1 STOP
DCA
Washington Reagan-National
DCA
Washington Reagan-National
Frontier
 
1 STOP
ONT
Ontario
16 Nov - 20 Nov
$133pp
ONT
Ontario
Frontier
 
1 STOP
BWI
Baltimore/Washington
BWI
Baltimore/Washington
Frontier
 
1 STOP
ONT
Ontario

Last minute flights from Ontario to Washington

Late deals on round-trip flights to Washington from Ontario, departing today and this week
30 Oct - 6 Nov
$128pp
ONT
Ontario
Frontier
 
1 STOP
DCA
Washington Reagan-National
DCA
Washington Reagan-National
Frontier
 
1 STOP
ONT
Ontario
30 Oct - 1 Dec
$133pp
ONT
Ontario
Frontier
 
1 STOP
DCA
Washington Reagan-National
DCA
Washington Reagan-National
Frontier
 
1 STOP
ONT
Ontario
2 Nov - 16 Nov
$138pp
ONT
Ontario
Frontier
 
1 STOP
DCA
Washington Reagan-National
DCA
Washington Reagan-National
Frontier
   
2 STOPS
ONT
Ontario

One-way flights to Washington from Ontario

The cheapest one-way flights from Ontario to Washington
8:25 am - 8:29 am
Frontier
1 Stop
21h 04m
ONT - DCA
Frontier
$70
Flights by SU
8:08 am - 8:29 am
Frontier
1 Stop
21h 21m
ONT - DCA
Frontier
$71
Kiwi.com
6:51 pm - 3:29 pm
Frontier
1 Stop
17h 38m
ONT - IAD
Frontier
$74
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Ontario</span> to <span class="emphasized">Washington</span> flights.

Flight FAQs

From Ontario to Washington

What airport do you fly from for flights from Ontario to Washington?

If you book a flight to Washington 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 per day from 7 different airlines.

Which airlines flying from Ontario to Washington have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Ontario to Washington that may be offering flexible cancellation policies are American Airlines, Frontier, and United Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Ontario to Washington for under $200 on Cheapflights?

Yes, there are multiple flights from Ontario to Washington for under $200. The cheapest flight booked recently is on Frontier for just $128, but on average you can expect to pay $152.

Are there last-minute flights available from Ontario to Washington for under $200?

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

What is the cheapest airline to fly from Ontario to Washington round-trip?

Flying on Frontier is currently your cheapest option to Washington, with prices starting at $128. You may be able to fly from Ontario to Washington for 62% less than the average price by searching for this airline.

What are the cheapest flights from Ontario to Washington?

While on average a flight from Ontario to Washington is generally $394, our data shows the cheapest flight currently is $78. When looking at the most popular route, (Ontario - Washington Reagan-National), you can expect to pay $128 for that flight.

What are the most popular airlines that fly from Ontario to Washington?

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

What are the most popular routes from Ontario to Washington?

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

COVID Restrictions

View COVID Travel Restrictions for Washington, DC

Do I need a COVID test to fly to Washington from Ontario?

Information is based on travel restrictions for travel to Washington within the United States

Most visitors from Ontario need to provide a negative COVID-19 test result and/or quarantine to enter Washington.

COVID-19 testing requirements
Visitors from Ontario must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Washington.

Quarantine requirements
Visitors from Ontario are not required to quarantine after entering Washington.

Do I need a test to fly back to Ontario from Washington?

Returning to Ontario from Washington

COVID-19 testing requirements
Visitors from Washington must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Ontario.

Quarantine requirements
Visitors from Washington are not required to quarantine after entering Ontario.

Hide COVID Travel Restrictions for Washington, DC

Destination information for Washington

Things to know before you go - useful duration and weather info for your trip from Ontario to Washington.
Average temperature for October in Washington
71.6 °F
Avg rainfall for October in Washington
3.7 ″

Airports servicing Ontario

Airports servicing Washington

Reagan-National (DCA)

Top 7 airlines flying from Ontario to Washington

The chart below displays the airlines Cheapflights users traveling from Ontario to Washington choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$103 $243 No cancel fee 62%
Alaska Airlines
$112 $309 No cancel fee 75%
United Airlines
$122 $377 No cancel fee 69%
American Airlines
$127 $452 No cancel fee 71%
Delta
$144 $425 No cancel fee N/A
JetBlue
$162 $385 No cancel fee 62%
Spirit Airlines
$169 $304 No cancel fee 65%
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