
Most accurate provider | Gotogate 3 stars |
|---|---|
Most trusted provider | Gotogate 3 stars |
Round-trip from | $586 (SmartFares) |
One-way from | $198 (Kiwi.com) |
Popular in | June |
Cheapest in | November |
Average price | $709 |
Good round-trip deal | $598 or less |
Good one-way deal | $418 or less |
Fly from
Fly to
Route
Depart
Return
Price
St. LouisLondon
STL - LGW
STLLGW
Lambert-St Louis
Thu 12/11
12:04 pm-10:00 am
2 stops15h 56m
London Gatwick
Sun 1/11
2:10 pm-7:50 am
1 stop23h 40m
St. LouisLondon
STL - LGW
STLLGW
Lambert-St Louis
Mon 12/8
10:47 am-10:00 am
2 stops17h 13m
London Gatwick
Fri 1/9
2:00 pm-10:33 pm
1 stop14h 33m
St. LouisLondon
STL - LGW
STLLGW
Lambert-St Louis
Wed 12/10
7:43 pm-10:00 am
2 stops32h 17m
London Gatwick
Thu 1/8
2:00 pm-10:33 pm
1 stop14h 33m
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
Mon 11/24
3:14 pm-7:55 am
1 stop10h 41m
London Heathrow
Wed 12/3
6:30 am-1:55 pm
1 stop13h 25m
St. LouisLondon
STL - LGW
STLLGW
Lambert-St Louis
Thu 12/11
12:04 pm-10:00 am
2 stops15h 56m
London Gatwick
Fri 1/9
2:00 pm-10:33 pm
1 stop14h 33m
St. LouisLondon
STL - LGW
STLLGW
Lambert-St Louis
Thu 1/15
5:11 pm-6:00 am
2 stops30h 49m
London Gatwick
Thu 1/22
2:00 pm-10:23 am
1 stop26h 23m
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
Tue 12/2
11:25 am-5:55 am
1 stop12h 30m
London Heathrow
Tue 12/9
6:50 am-3:40 pm
2 stops14h 50m
St. LouisLondon
STL - LGW
STLLGW
Lambert-St Louis
Sun 11/23
3:14 pm-6:00 am
2 stops32h 46m
London Gatwick
Thu 11/27
2:00 pm-11:57 pm
1 stop15h 57m
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
Wed 2/11
9:57 am-7:10 am
2 stops15h 13m
London Heathrow
Fri 2/20
6:35 am-5:44 pm
2 stops17h 09m
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
Wed 1/7
6:00 am-6:25 am
1 stop18h 25m
London Heathrow
Wed 1/14
6:30 am-4:39 pm
2 stops16h 09m
| 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*2 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star |
The best time to book flights from St. Louis to London is 25 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, September is the cheapest month in which you can book a flight from St. Louis to London (average of $530). Flying from St. Louis to London in June is currently the most expensive (average of $1,001). 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.
It’s optimal to fly from St. Louis to London in the evening. By choosing this option you can save up to 30% on the cost of your flight, compared to a flight at noon.
Travelers seeking maximum savings on their St. Louis to London flight should consider departing on Friday mornings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Chicago (ORD) – chosen by Cheapflights users on 55% of 1-stop itineraries from St. Louis to London on Cheapflights.
Chicago (ORD) is the most affordable 1-stop option, with an average round-trip price of $782.
Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 9h 55m.
Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 16m.
Entertainment
Crew
Food
Boarding
Comfort
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
Entertainment
Crew
Food
Boarding
Comfort
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
Entertainment
Crew
Food
Boarding
Comfort
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
Entertainment
Crew
Food
Boarding
Comfort
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
Entertainment
Crew
Food
Boarding
Comfort
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
Entertainment
Crew
Food
Boarding
Comfort
Overall
Reviews
Sebrena,Oct 2025
IAH - RSW
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$529 | Average$745 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$573 | Average$929 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$580 | Average$925 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$580 | Average$886 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$581 | Average$886 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$597 | Average$960 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$602 | Average$1,102 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$636 | Average$880 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$670 | Average$888 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$747 | Average$947 | FlexibilityNo cancel fee | On-time72% |