
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $148 (Frontier) |
One-way from | $65 (Trip.com) |
Popular in | December |
Cheapest in | September |
Average price | $385 |
Good round-trip deal | $408 or less |
Good one-way deal | $283 or less |
Fly from
Fly to
Route
Depart
Return
Price
OntarioWashington, D.C.
ONT - DCA
ONTDCA
Ontario
Thu 2/26
2:08 pm-4:59 pm
1 stop23h 51m
Washington, D.C. Reagan-National
Sat 2/28
2:00 pm-7:59 am
1 stop20h 59m
OntarioWashington, D.C.
ONT - DCA
ONTDCA
Ontario
Tue 2/24
8:35 am-9:59 pm
1 stop10h 24m
Washington, D.C. Reagan-National
Mon 3/2
6:00 pm-11:59 pm
1 stop8h 59m
OntarioWashington, D.C.
ONT - DCA
ONTDCA
Ontario
Wed 3/18
6:15 am-9:59 pm
1 stop12h 44m
Washington, D.C. Reagan-National
Mon 3/23
6:00 pm-11:59 pm
1 stop8h 59m
OntarioWashington, D.C.
ONT - DCA
ONTDCA
Ontario
Thu 3/5
2:08 pm-1:02 pm
1 stop19h 54m
Washington, D.C. Reagan-National
Mon 3/9
8:00 am-11:59 pm
1 stop18h 59m
OntarioWashington, D.C.
ONT - DCA
ONTDCA
Ontario
Sat 2/21
6:00 am-4:59 pm
1 stop7h 59m
Washington, D.C. Reagan-National
Sun 3/1
6:00 pm-11:59 pm
1 stop8h 59m
OntarioWashington, D.C.
ONT - DCA
ONTDCA
Ontario
Mon 3/9
9:40 pm-1:02 pm
2 stops12h 22m
Washington, D.C. Reagan-National
Thu 3/12
6:00 pm-11:59 pm
1 stop8h 59m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Wed 3/18
5:09 pm-5:51 am
1 stop9h 42m
Baltimore/Washington
Wed 3/25
7:01 am-12:23 pm
1 stop8h 22m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Sun 5/3
10:15 pm-9:36 am
1 stop8h 21m
Baltimore/Washington
Wed 5/6
6:00 am-11:36 am
1 stop8h 36m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Fri 4/17
10:15 pm-11:41 am
2 stops10h 26m
Baltimore/Washington
Sun 4/19
6:00 am-11:36 am
1 stop8h 36m
OntarioWashington, D.C.
ONT - DCA
ONTDCA
Ontario
Tue 3/3
10:20 pm-1:24 pm
2 stops12h 04m
Washington, D.C. Reagan-National
Tue 3/10
6:00 am-11:47 am
1 stop8h 47m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
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 52 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, August is the cheapest month in which you can book a flight from Ontario to Washington, D.C. (average of $93). Flying from Ontario to Washington, D.C. in December is currently the most expensive (average of $179). 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.
Denver (DEN) – chosen by Cheapflights users on 96% of 1-stop itineraries from Ontario to Washington, D.C. on Cheapflights.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $346.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 7h 15m.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 1h 18m.
Crew
Entertainment
Food
Boarding
Comfort
Overall
Reviews
William Drew,Nov 2025
SJC - HNL
Crew
Entertainment
Food
Boarding
Comfort
Overall
Reviews
William Drew,Nov 2025
SJC - HNL
Crew
Entertainment
Food
Boarding
Comfort
Overall
Reviews
William Drew,Nov 2025
SJC - HNL
Crew
Entertainment
Food
Boarding
Comfort
Overall
Reviews
William Drew,Nov 2025
SJC - HNL
Crew
Entertainment
Food
Boarding
Comfort
Overall
Reviews
William Drew,Nov 2025
SJC - HNL
Crew
Entertainment
Food
Boarding
Comfort
Overall
Reviews
William Drew,Nov 2025
SJC - HNL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$72 | Average$224 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$136 | Average$267 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$183 | Average$424 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$226 | Average$454 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$258 | Average$455 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$278 | Average$479 | FlexibilityNo cancel fee | On-time71% |