
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $133 (Kiwi.com) |
One-way from | $61 (Trip.com) |
Popular in | November |
Cheapest in | September |
Average price | $431 |
Good round-trip deal | $533 or less |
Good one-way deal | $218 or less |
Fly from
Fly to
Route
Depart
Return
Price
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Fri 1/9
8:31 am-12:07 pm
1 stop24h 36m
Baltimore/Washington
Sun 1/11
8:08 pm-9:23 pm
1 stop28h 15m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Fri 1/16
8:32 am-12:03 pm
1 stop24h 31m
Baltimore/Washington
Wed 1/21
8:08 pm-12:20 am
2 stops31h 12m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Thu 2/5
7:30 am-11:44 pm
2 stops13h 14m
Baltimore/Washington
Sun 2/8
1:02 pm-10:44 pm
2 stops12h 42m
OntarioWashington, D.C.
ONT - DCA
ONTDCA
Ontario
Mon 2/2
6:20 am-9:59 pm
1 stop12h 39m
Washington, D.C. Reagan-National
Fri 2/13
1:00 pm-11:59 pm
1 stop13h 59m
OntarioWashington, D.C.
ONT - IAD
ONTIAD
Ontario
Thu 2/5
6:00 am-4:26 pm
1 stop31h 26m
Washington, D.C. Dulles Intl
Sun 2/8
6:04 pm-10:59 am
1 stop19h 55m
OntarioWashington, D.C.
ONT - IAD
ONTIAD
Ontario
Wed 1/28
11:53 am-4:26 pm
1 stop25h 33m
Washington, D.C. Dulles Intl
Sun 2/8
6:04 pm-10:59 am
1 stop19h 55m
OntarioWashington, D.C.
ONT - IAD
ONTIAD
Ontario
Fri 2/6
11:53 am-4:26 pm
1 stop25h 33m
Washington, D.C. Dulles Intl
Sun 2/8
6:04 pm-10:59 am
1 stop19h 55m
OntarioWashington, D.C.
ONT - IAD
ONTIAD
Ontario
Sat 2/7
7:30 am-11:10 pm
1 stop12h 40m
Washington, D.C. Dulles Intl
Mon 2/9
7:30 am-10:44 pm
1 stop18h 14m
OntarioWashington, D.C.
ONT - IAD
ONTIAD
Ontario
Thu 1/8
6:00 am-11:10 pm
2 stops14h 10m
Washington, D.C. Dulles Intl
Sun 1/11
7:30 am-1:56 pm
1 stop9h 26m
OntarioBaltimore
ONT - BWI
ONTBWI
Ontario
Tue 1/13
7:30 am-11:44 pm
2 stops13h 14m
Baltimore/Washington
Tue 1/20
6:00 am-1:56 pm
2 stops10h 56m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
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.
It’s typically best to fly out from Ontario to Washington, D.C. in the afternoon. Doing so could potentially save you 17% on the flight price compared to flying at noon, which is usually more expensive.
Travelers seeking maximum savings on their Ontario to Washington, D.C. flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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.
Comfort
Entertainment
Boarding
Crew
Overall
Food
Reviews
William Drew,Nov 2025
SJC - HNL
Comfort
Entertainment
Boarding
Crew
Overall
Food
Reviews
William Drew,Nov 2025
SJC - HNL
Comfort
Entertainment
Boarding
Crew
Overall
Food
Reviews
William Drew,Nov 2025
SJC - HNL
Comfort
Entertainment
Boarding
Crew
Overall
Food
Reviews
William Drew,Nov 2025
SJC - HNL
Comfort
Entertainment
Boarding
Crew
Overall
Food
Reviews
William Drew,Nov 2025
SJC - HNL
Comfort
Entertainment
Boarding
Crew
Overall
Food
Reviews
William Drew,Nov 2025
SJC - HNL
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$98 | Average$224 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$147 | Average$275 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$226 | Average$454 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$258 | Average$460 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$276 | Average$387 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$278 | Average$468 | FlexibilityNo cancel fee | On-time71% |