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 | $397 (FlightHub) |
|---|---|
One-way from | $184 (Kiwi.com) |
Popular in | December |
Cheapest in | February |
Average price | $1,296 |
Fly from
Fly to
Route
Depart
Return
Price
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
Tue 1/13
4:35 pm-1:15 pm
2 stops14h 40m
Brussels Bruxelles-National
Fri 1/23
9:20 am-7:42 pm
2 stops16h 22m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
Sat 4/4
10:45 pm-8:05 pm
1 stop15h 20m
Brussels Bruxelles-National
Sat 4/11
8:55 pm-8:45 pm
1 stop29h 50m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
Thu 1/8
2:20 pm-7:15 am
1 stop10h 55m
Brussels Bruxelles-National
Tue 1/20
10:00 am-1:13 pm
2 stops33h 13m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
Mon 2/9
4:16 pm-8:55 am
1 stop34h 39m
Brussels Bruxelles-National
Mon 2/16
10:00 am-9:32 am
1 stop29h 32m
MiamiBrussels
MIA - BRU
MIABRU
Miami
Mon 1/19
8:40 pm-9:40 am
1 stop31h 00m
Brussels Bruxelles-National
Mon 1/26
8:30 pm-6:35 pm
1 stop28h 05m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
Wed 1/21
4:15 pm-8:05 am
1 stop9h 50m
Brussels Bruxelles-National
Sun 1/25
11:15 am-5:14 pm
1 stop11h 59m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
Fri 1/16
5:30 am-7:50 am
1 stop20h 20m
Brussels Bruxelles-National
Wed 1/21
11:15 am-11:49 pm
2 stops18h 34m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
Thu 1/15
1:30 pm-8:05 am
1 stop12h 35m
Brussels Bruxelles-National
Wed 1/21
11:15 am-6:57 pm
2 stops13h 42m
BostonBrussels
BOS - BRU
BOSBRU
Boston Logan Intl
Mon 1/12
1:00 pm-7:35 am
2 stops12h 35m
Brussels Bruxelles-National
Tue 1/27
2:45 pm-10:22 pm
2 stops13h 37m
MiamiBrussels
MIA - BRU
MIABRU
Miami
Mon 3/9
9:40 pm-10:35 am
2 stops31h 55m
Brussels Bruxelles-National
Sat 3/14
3:10 pm-7:35 pm
1 stop33h 25m
Currently, February is the cheapest month in which you can book a flight from USA to Brussels (average of $316). Flying from USA to Brussels in June is currently the most expensive (average of $452). 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
Boarding
Food
Entertainment
Comfort
Reviews
Anonymous,Dec 2025
SFO - CPH
Crew
Overall
Boarding
Food
Entertainment
Comfort
Reviews
Anonymous,Dec 2025
SFO - CPH
Crew
Overall
Boarding
Food
Entertainment
Comfort
Reviews
Anonymous,Dec 2025
SFO - CPH
Crew
Overall
Boarding
Food
Entertainment
Comfort
Reviews
Anonymous,Dec 2025
SFO - CPH
Crew
Overall
Boarding
Food
Entertainment
Comfort
Reviews
Anonymous,Dec 2025
SFO - CPH
Crew
Overall
Boarding
Food
Entertainment
Comfort
Reviews
Anonymous,Dec 2025
SFO - CPH
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$256 | Average$551 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$317 | Average$582 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$333 | Average$800 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$345 | Average$728 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$352 | Average$590 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$359 | Average$868 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$386 | Average$743 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$397 | Average$712 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$406 | Average$817 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$408 | Average$886 | FlexibilityNo cancel fee | On-time75% |