Baltimore to London BWI → LGW, LHR, STN
Baltimore/Wash International Thurgood Marshall Airport (BWI) → London Gatwick Airport (LGW), London Heathrow Airport (LHR), Stansted Airport (STN)
The cheapest return found recently is $841 with Icelandair, 7 Dec – 10 Jan 2027, found yesterday. The cheapest one-way found recently is $378 with British Airways, 16 Sept 2027, found 6 days ago.
Return
The cheapest return fare on each of 6 departure dates is usually $853 to $927.
Cheapest return found recently
$841
7 Dec – 10 Jan 2027 · Icelandair
Baltimore/Wash International Thurgood Marshall Airport (BWI) → London Heathrow Airport (LHR)
Leaves 7:40 p.m. · Return leaves 12:15 p.m. · 21 h 35 min of travel, both ways together
out 1 stop, back 1 stop
found yesterday
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$841 7 Dec – 10 Jan 2027found yesterdaySee prices for these dates
$683 12 Jan 2027 – 19 Jan 2027found 4 days agoSee prices for these dates
What have prices looked like?
Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $395 to $710.
At $841, the cheapest return found recently is above that range.
25 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 6 departure dates from 20 Nov to 1 Jun 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 34-night return fares leaving within 3 days of 7 Dec to compare.
Every date we hold
6 fares on 6 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 20 Nov – 29 Nov | $1,173 | United Airlines | Baltimore/Wash International Thurgood Marshall Airport (BWI) → London Heathrow Airport (LHR) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 29 Nov – 4 Dec | $929 | Icelandair | Baltimore/Wash International Thurgood Marshall Airport (BWI) → London Heathrow Airport (LHR) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 7 Dec – 10 Jan 2027 | $841 | Icelandair | Baltimore/Wash International Thurgood Marshall Airport (BWI) → London Heathrow Airport (LHR) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 8 Jan 2027 – 15 Jan 2027 | $922 | Frontier Airlines | Baltimore/Wash International Thurgood Marshall Airport (BWI) → London Gatwick Airport (LGW) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 12 Jan 2027 – 19 Jan 2027 | $683 | Icelandair | Baltimore/Wash International Thurgood Marshall Airport (BWI) → Stansted Airport (STN) | out 2 stops, back 2 stops | found 4 days ago | See prices for these dates |
| 1 Jun 2027 – 15 Jun 2027 | $887 | Icelandair | Baltimore/Wash International Thurgood Marshall Airport (BWI) → London Gatwick Airport (LGW) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
Which month looks cheapest?
January 2027 is the cheapest month — from $683.
Airlines on the cheapest dates: Icelandair, United Airlines, Frontier Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$378
16 Sept 2027 · British Airways
Baltimore/Wash International Thurgood Marshall Airport (BWI) → London Heathrow Airport (LHR)
Leaves 6:20 p.m. · 7 h 20 min trip
nonstop
found 6 days ago
Cheapest nonstop one-way
$378
16 Sept 2027 · British Airways
Baltimore/Wash International Thurgood Marshall Airport (BWI) → London Heathrow Airport (LHR)
Leaves 6:20 p.m. · 7 h 20 min trip
nonstop
found 6 days ago
Found recently, and the cheapest we hold
$378 16 Sept 2027found 6 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 22 days, 24 Sept to 18 Oct, the cheapest one-way we saw each day was $267 to $378.
At $378, the cheapest one-way found recently is at the high end of that range.
22 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 16 Sept 2027 to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 16 Sept 2027 | $378 | British Airways | Baltimore/Wash International Thurgood Marshall Airport (BWI) → London Heathrow Airport (LHR) | nonstop | found 6 days ago | Open this trip |
Airlines on the cheapest dates: British Airways.
Premium cabin fares from Baltimore to London
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 7 Dec – 10 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 16 Sept 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Baltimore to London?
Return
Fares 60 to 89 days before departure were typically 33% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $1,008 | $690 | +50% | 10 |
| 7–13 days | $859 | $764 | +28% | 18 |
| 14–29 days | $742 | $395 | +10% | 9 |
| 30–59 days | $742 | $710 | +10% | 18 |
| 60–89 days | $672 | $515 | Cheapest seen | 23 |
| 90–179 days | $736 | $559 | +10% | 16 |
| 180+ days | $777 | $728 | +16% | 14 |
One-way
Not enough history yet: in 22 days of one-way prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Washington → London
57 km from Baltimore
$773
$68 less than flying from Baltimore
7 Dec – 10 Jan 2027 · IAD → LHR · out 1 stop, back 1 stop
found yesterday
Philadelphia → London
145 km from Baltimore
$1,112
$271 more than flying from Baltimore
25 Dec – 29 Dec · PHL → LHR · out 1 stop, back 1 stop
found yesterday
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Washington → London
57 km from Baltimore
$312
$66 less than flying from Baltimore
1 Dec · DCA → LHR · 1 stop
found 2 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 7 Dec – 10 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work