
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $373 (Sembo) |
One-way from | $160 (oojo) |
Popular in | June |
Cheapest in | April |
Average price | $514 |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Wed 4/22
8:22 am-10:05 pm
2 stops31h 43m
Oslo Gardermoen
Thu 4/30
7:05 am-4:05 pm
1 stop15h 00m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Mon 3/9
6:40 pm-11:00 am
1 stop11h 20m
Oslo Gardermoen
Sat 3/14
6:10 am-4:35 pm
1 stop15h 25m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Sun 2/22
10:30 pm-5:55 pm
1 stop13h 25m
Oslo Gardermoen
Thu 3/5
6:55 pm-9:00 pm
1 stop32h 05m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Mon 2/23
7:52 pm-4:20 pm
2 stops14h 28m
Oslo Gardermoen
Mon 3/9
12:40 pm-5:05 pm
1 stop33h 25m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Mon 2/23
12:35 pm-4:20 pm
2 stops21h 45m
Oslo Gardermoen
Sun 3/8
6:30 am-4:05 pm
1 stop15h 35m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Sun 2/22
6:05 pm-9:00 pm
1 stop20h 55m
Oslo Gardermoen
Sun 3/8
7:00 pm-5:05 pm
1 stop27h 05m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Mon 4/13
6:50 pm-6:45 pm
2 stops17h 55m
Oslo Gardermoen
Wed 4/22
6:30 am-4:15 pm
2 stops15h 45m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Thu 2/19
1:02 pm-5:10 pm
2 stops22h 08m
Oslo Gardermoen
Tue 2/24
6:15 am-8:15 pm
1 stop20h 00m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Sun 2/22
1:02 pm-5:10 pm
2 stops22h 08m
Oslo Gardermoen
Sun 3/1
9:35 am-3:50 pm
1 stop12h 15m
Washington, D.C.Oslo
IAD - OSL
IADOSL
Washington, D.C. Dulles Intl
Mon 3/2
12:24 pm-8:40 am
2 stops14h 16m
Oslo Gardermoen
Mon 3/9
9:25 am-5:05 pm
1 stop12h 40m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars |
The best time to book flights from Washington, D.C. Dulles Intl Airport to Oslo Gardermoen Airport is 42 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 $380). Flying from Washington, D.C. Dulles Intl Airport to Oslo Gardermoen Airport in July is currently the most expensive (average of $555). 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.
Copenhagen (CPH) – chosen by Cheapflights users on 50% of 1-stop itineraries from Washington, D.C. Dulles Intl Airport to Oslo Gardermoen Airport on Cheapflights.
Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of $386.
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.
Boarding
Comfort
Entertainment
Crew
Overall
Food
Reviews
Dane,Jan 2026
TYS - IAD
Boarding
Comfort
Entertainment
Crew
Overall
Food
Reviews
Dane,Jan 2026
TYS - IAD
Boarding
Comfort
Entertainment
Crew
Overall
Food
Reviews
Dane,Jan 2026
TYS - IAD
Boarding
Comfort
Entertainment
Crew
Overall
Food
Reviews
Dane,Jan 2026
TYS - IAD
Boarding
Comfort
Entertainment
Crew
Overall
Food
Reviews
Dane,Jan 2026
TYS - IAD
Boarding
Comfort
Entertainment
Crew
Overall
Food
Reviews
Dane,Jan 2026
TYS - IAD
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$389 | Average$584 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$400 | Average$656 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$512 | Average$714 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$513 | Average$615 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$529 | Average$672 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$531 | Average$739 | FlexibilityNo cancel fee | On-time69% |