United's Polaris offers lie-flat seats with noise-reducing headphones and large entertainment screens.
Premium Plus seats offer extra legroom and upgraded food and drink on international flights.

Most accurate provider | Justfly.com 3 stars |
|---|---|
Most trusted provider | Justfly.com 3 stars |
Round-trip from | $509 (Scandinavian Airlines) |
One-way from | $233 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $1,084 |
Good round-trip deal | $920 or less |
Good one-way deal | $620 or less |
Fly from
Fly to
Route
Depart
Return
Price
Washington, D.C.Brussels
IAD - BRU
IADBRU
Washington, D.C. Dulles Intl
lun. 1/26
12:23 pm-7:50 pm
2 stops25h 27m
Brussels Bruxelles-National
vie. 1/30
10:20 am-7:09 pm
2 stops14h 49m
Washington, D.C.Brussels
IAD - BRU
IADBRU
Washington, D.C. Dulles Intl
mié. 2/11
12:23 pm-9:40 am
2 stops15h 17m
Brussels Bruxelles-National
sáb. 2/14
6:30 am-6:50 pm
2 stops18h 20m
Washington, D.C.Brussels
IAD - BRU
IADBRU
Washington, D.C. Dulles Intl
mar. 2/10
12:23 pm-1:45 pm
2 stops19h 22m
Brussels Bruxelles-National
sáb. 2/14
6:30 am-6:50 pm
2 stops18h 20m
Washington, D.C.Brussels
IAD - BRU
IADBRU
Washington, D.C. Dulles Intl
vie. 1/9
12:23 pm-9:40 am
2 stops15h 17m
Brussels Bruxelles-National
dom. 1/18
6:55 pm-3:20 pm
2 stops26h 25m
Washington, D.C.Brussels
IAD - BRU
IADBRU
Washington, D.C. Dulles Intl
mié. 12/10
8:30 pm-7:50 pm
1 stop17h 20m
Brussels Bruxelles-National
lun. 12/15
10:20 am-7:19 pm
2 stops14h 59m
Washington, D.C.Brussels
IAD - BRU
IADBRU
Washington, D.C. Dulles Intl
dom. 1/25
5:45 pm-7:15 am
Nonstop7h 30m
Brussels Bruxelles-National
mar. 2/3
11:55 am-2:35 pm
Nonstop8h 40m
Washington, D.C.Brussels
IAD - BRU
IADBRU
Washington, D.C. Dulles Intl
sáb. 1/17
6:05 pm-1:15 pm
1 stop13h 10m
Brussels Bruxelles-National
sáb. 1/24
11:55 am-2:35 pm
Nonstop8h 40m
Washington, D.C.Brussels
IAD - BRU
IADBRU
Washington, D.C. Dulles Intl
mié. 1/14
10:30 pm-10:50 am
2 stops30h 20m
Washington, D.C.Brussels
IAD - BRU
IADBRU
Washington, D.C. Dulles Intl
dom. 1/25
12:23 pm-2:30 pm
2 stops20h 07m
Washington, D.C.Brussels
IAD - BRU
IADBRU
Washington, D.C. Dulles Intl
dom. 1/18
12:23 pm-9:40 am
2 stops15h 17m
| 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 | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star |
The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Brussels Bruxelles-National Airport may vary depending on when you book. For the best chance of a lower fare, look to book 74 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Brussels Bruxelles-National Airport (average of $427). Flying from Washington, D.C. Dulles Intl Airport to Brussels Bruxelles-National Airport in June is currently the most expensive (average of $684). 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.
One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Brussels Bruxelles-National Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 48% on airfare.
Istanbul (IST) – chosen by Cheapflights users on 82% of 1-stop itineraries from Washington, D.C. Dulles Intl Airport to Brussels Bruxelles-National Airport on Cheapflights.
Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $654.
Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 10h 20m.
Flights via Dublin (DUB) offer the fastest connection on this route, with an average layover time of 1h 43m.
Boarding
Overall
Crew
Comfort
Food
Entertainment
Reviews
Kent,Aug 2025
CPH - SEA
Boarding
Overall
Crew
Comfort
Food
Entertainment
Reviews
Kent,Aug 2025
CPH - SEA
Boarding
Overall
Crew
Comfort
Food
Entertainment
Reviews
Kent,Aug 2025
CPH - SEA
Boarding
Overall
Crew
Comfort
Food
Entertainment
Reviews
Kent,Aug 2025
CPH - SEA
Boarding
Overall
Crew
Comfort
Food
Entertainment
Reviews
Kent,Aug 2025
CPH - SEA
Boarding
Overall
Crew
Comfort
Food
Entertainment
Reviews
Kent,Aug 2025
CPH - SEA
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$419 | Average$569 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$441 | Average$763 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$480 | Average$713 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$480 | Average$915 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$511 | Average$704 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$539 | Average$784 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$540 | Average$624 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$555 | Average$726 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$596 | Average$943 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$633 | Average$1,083 | FlexibilityNo cancel fee | On-timeN/A |