United Polaris offers lie-flat seats with Saks Fifth Avenue bedding on long-haul routes.
United Premium Plus includes extra legroom and upgraded meals on international routes.

Round-trip from | $388 (Mytrip) |
|---|---|
One-way from | $182 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $609 |
Fly from
Fly to
Route
Depart
Return
Price
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
dom 5/3
6:00 am-7:15 am
1 stop19h 15m
Brussels Bruxelles-National
mar 5/26
9:25 am-9:45 am
1 stop30h 20m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
dom 2/15
6:15 am-7:50 am
2 stops19h 35m
Brussels Bruxelles-National
lun 2/23
6:00 pm-8:20 pm
1 stop32h 20m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
dom 2/1
10:45 pm-11:00 am
1 stop30h 15m
Brussels Bruxelles-National
sab 2/7
5:55 pm-2:35 pm
1 stop26h 40m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
mer 2/11
4:35 pm-1:15 pm
2 stops14h 40m
Brussels Bruxelles-National
mer 2/18
10:00 am-6:45 pm
2 stops14h 45m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
sab 3/28
7:34 pm-6:15 am
1 stop29h 41m
Brussels Bruxelles-National
mar 4/7
9:25 am-9:52 am
1 stop30h 27m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
gio 2/19
6:28 pm-8:55 am
1 stop32h 27m
Brussels Bruxelles-National
gio 2/26
10:00 am-9:32 am
1 stop29h 32m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
gio 4/2
5:40 pm-9:40 am
1 stop10h 00m
Brussels Bruxelles-National
ven 4/10
10:20 am-3:35 pm
1 stop11h 15m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
dom 2/15
7:05 am-7:50 am
2 stops18h 45m
Brussels Bruxelles-National
lun 2/23
4:55 pm-6:02 pm
2 stops31h 07m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
dom 1/18
2:20 pm-7:15 am
1 stop10h 55m
Brussels Bruxelles-National
mar 2/3
6:45 am-1:35 pm
2 stops12h 50m
NewarkBrussels
EWR - BRU
EWRBRU
Newark
lun 2/2
6:30 pm-10:50 am
1 stop10h 20m
Brussels Bruxelles-National
gio 2/5
11:30 am-1:25 pm
1 stop31h 55m
Currently, February is the cheapest month in which you can book a flight from USA to Brussels (average of $312). Flying from USA to Brussels in June is currently the most expensive (average of $451). 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.
When flying from USA to Brussels, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
About 42% of weekly flights between United States and Brussels have experienced delays in the past year, with the average delay time being 201 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
Monday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Air Europa have had the lowest number of delays on this route, with just 18% of flights being delayed.
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Anonymous,Dec 2025
SFO - CPH
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Anonymous,Dec 2025
SFO - CPH
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Anonymous,Dec 2025
SFO - CPH
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Anonymous,Dec 2025
SFO - CPH
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Anonymous,Dec 2025
SFO - CPH
Crew
Overall
Comfort
Food
Entertainment
Boarding
Reviews
Anonymous,Dec 2025
SFO - CPH
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$256 | Average$586 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$317 | Average$586 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$333 | Average$795 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$334 | Average$793 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$345 | Average$744 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$352 | Average$499 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$362 | Average$886 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$386 | Average$742 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$397 | Average$712 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$397 | Average$848 | FlexibilityNo cancel fee | On-time67% |