
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $362 (Ticket) |
One-way from | $159 (oojo) |
Popular in | June |
Cheapest in | April |
Average price | $684 |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Sat 1/31
12:23 pm-9:20 am
2 stops14h 57m
Oslo Gardermoen
Wed 2/4
8:00 am-5:15 pm
1 stop15h 15m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Sun 1/25
12:23 pm-5:20 pm
2 stops22h 57m
Oslo Gardermoen
Thu 1/29
9:00 am-5:15 pm
1 stop14h 15m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Mon 2/16
5:30 pm-5:55 pm
1 stop18h 25m
Oslo Gardermoen
Mon 2/23
6:45 pm-2:35 pm
1 stop25h 50m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Thu 2/12
8:30 pm-2:15 pm
1 stop11h 45m
Oslo Gardermoen
Thu 2/19
10:00 am-5:15 pm
1 stop13h 15m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Fri 1/16
10:00 pm-11:20 pm
1 stop19h 20m
Oslo Gardermoen
Mon 1/19
9:35 am-8:15 pm
1 stop16h 40m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Sun 1/25
12:23 pm-11:15 am
2 stops16h 52m
Oslo Gardermoen
Thu 2/5
9:00 am-7:09 pm
2 stops16h 09m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Fri 2/13
10:30 pm-5:55 pm
1 stop13h 25m
Oslo Gardermoen
Mon 2/23
6:45 pm-2:35 pm
1 stop25h 50m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Mon 3/30
7:25 pm-6:45 pm
2 stops17h 20m
Oslo Gardermoen
Wed 4/15
6:30 am-3:35 pm
1 stop15h 05m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Wed 1/14
12:23 pm-11:15 am
2 stops16h 52m
Oslo Gardermoen
Mon 1/19
8:00 am-3:20 pm
1 stop13h 20m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Wed 1/14
5:40 pm-5:40 pm
1 stop18h 00m
Oslo Gardermoen
Mon 1/19
6:15 am-3:50 pm
1 stop15h 35m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*2 stars |
The best time to book flights from Washington, D.C. Dulles Intl Airport to Oslo Gardermoen Airport is 46 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Oslo Gardermoen Airport (average of $379). Flying from Washington, D.C. Dulles Intl Airport to Oslo Gardermoen Airport in July is currently the most expensive (average of $543). 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.
A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Oslo Gardermoen Airport in the morning. If you’re flexible enough to do this you can expect to save up to 59% on your trip compared to booking a flight at noon.
Copenhagen (CPH) – chosen by Cheapflights users on 60% of 1-stop itineraries from Washington, D.C. Dulles Intl Airport to Oslo Gardermoen Airport on Cheapflights.
Lisbon (LIS) is the most affordable 1-stop option, with an average round-trip price of $498.
Flights via Copenhagen (CPH) have the shortest average one-way travel time for 1-stop routes: 9h 45m.
Flights via Copenhagen (CPH) offer the fastest connection on this route, with an average layover time of 1h 01m.
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
Kent,Aug 2025
CPH - SEA
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
Kent,Aug 2025
CPH - SEA
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
Kent,Aug 2025
CPH - SEA
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
Kent,Aug 2025
CPH - SEA
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
Kent,Aug 2025
CPH - SEA
Food
Boarding
Entertainment
Overall
Comfort
Crew
Reviews
Kent,Aug 2025
CPH - SEA
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$389 | Average$586 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$400 | Average$644 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$514 | Average$618 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$535 | Average$748 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$538 | Average$575 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$540 | Average$734 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$543 | Average$574 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$552 | Average$705 | FlexibilityNo cancel fee | On-time70% |