Cheap flights from Washington to London from $730 DCA, IAD → LCY, LGW, LHR, LTN, SEN, STN
Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) → London City Airport (LCY), London Gatwick Airport (LGW), London Heathrow Airport (LHR), London Luton Airport (LTN), London Southend Airport (SEN), Stansted Airport (STN)
The cheapest return found recently is $730 with TAP Air Portugal, 3 Dec – 14 Dec, found 2 days ago.
- Cheapest return found recently
- $730, 3 Dec to 14 Dec
- Usual return price
- $721 to $937
- Cheapest month to fly
- November 2026, return fares from $625 found in the last 7 days
- Airlines with nonstop flights
- British Airways, United Airlines, Iberia, KLM, Virgin Atlantic
Return
The cheapest return fare on each of 8 departure dates is usually $721 to $937.
Cheapest return found recently
$730
3 Dec – 14 Dec · TAP Air Portugal
Ronald Reagan National Airport (DCA) → London Heathrow Airport (LHR)
Leaves 6:15 a.m. · Return leaves 8:15 p.m. · 38 h 35 min of travel, both ways together
out 1 stop, back 3 stops · via John F. Kennedy International Airport (JFK), Menara Airport (RAK), Malaga Airport (AGP), Lisbon Portela Airport (LIS) · separate tickets likely: collect your bags and check in again · overnight connection
found 2 days ago
Cheapest nonstop return
$1,033
3 Dec – 13 Dec · Virgin Atlantic
Washington Dulles International Airport (IAD) → London Heathrow Airport (LHR)
Leaves 8:45 p.m. · Return leaves 9:45 p.m. · 16 h 5 min of travel, both ways together
out nonstop, back nonstop
found 2 days ago
Found recently, and the cheapest we hold
$730 3 Dec – 14 Decfound 2 days agoSee prices for these dates
$625 26 Nov – 4 Decfound 5 days agoSee prices for these dates
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $395 to $735.
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 8 departure dates from 16 Nov to 22 Oct 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 11-night return fares leaving within 3 days of 3 Dec to compare.
Every date we hold
193 fares on 8 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 16 Nov – 26 Nov | $692 | TAP Air Portugal | Washington Dulles International Airport (IAD) → London Gatwick Airport (LGW) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 20 Nov – 30 Nov | $1,273 | Air Canada | Ronald Reagan National Airport (DCA) → London Heathrow Airport (LHR) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 21 Nov – 29 Nov | $1,106 | Frontier Airlines | Washington Dulles International Airport (IAD) → London Gatwick Airport (LGW) | out 1 stop, back 3 stops | found 3 days ago | See prices for these dates |
| 26 Nov – 4 Dec | $625 | Air Canada | Ronald Reagan National Airport (DCA) → London Heathrow Airport (LHR) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 3 Dec – 14 Dec | $730 | TAP Air Portugal | Ronald Reagan National Airport (DCA) → London Heathrow Airport (LHR) | out 1 stop, back 3 stops | found 2 days ago | See prices for these dates |
| 27 Dec – 10 Jan 2027 | $748 | ITA Airways | Washington Dulles International Airport (IAD) → London City Airport (LCY) | out 2 stops, back 2 stops | found 2 days ago | See prices for these dates |
| 13 Jul 2027 – 10 Aug 2027 | $880 | Air Canada | Washington Dulles International Airport (IAD) → London Heathrow Airport (LHR) | out 1 stop, back 1 stop | found 3 days ago | See prices for these dates |
| 22 Oct 2027 – 29 Oct 2027 | $748 | SAS Scandinavian | Washington Dulles International Airport (IAD) → London Heathrow Airport (LHR) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $625.
Airlines on the cheapest dates: Air Canada, TAP Air Portugal, Frontier Airlines, ITA Airways, SAS Scandinavian.
Premium cabin fares from Washington 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 3 Dec – 14 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Washington to London?
Return
Fares 60 to 89 days before departure were typically 37% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (49 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 | $900 | $562 | +60% | 19 |
| 7–13 days | $782 | $607 | +39% | 23 |
| 14–29 days | $809 | $395 | +43% | 26 |
| 30–59 days | $744 | $489 | +32% | 46 |
| 60–89 days | $564 | $466 | Cheapest seen | 44 |
| 90–179 days | $725 | $523 | +29% | 30 |
| 180+ days | $764 | $748 | +36% | 12 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Baltimore → London
57 km from Washington
$754
$24 more than flying from Washington
3 Dec – 13 Dec · BWI → LHR · out 1 stop, back 1 stop
found 2 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Baltimore → London
57 km from Washington
$434
1 Jul 2027 · BWI → LHR · 1 stop
found 3 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 3 Dec – 14 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Washington to London?
The cheapest return found recently is $730 with TAP Air Portugal, 3 Dec to 14 Dec, found 2 days ago. The cheapest return we hold, of any age, is $625 with Air Canada, 26 Nov to 4 Dec, found 5 days ago. The cheapest return fare on each of 8 departure dates is usually $721 to $937.
What is the cheapest month to fly from Washington to London?
November 2026 is the cheapest month for a return, from $625, 26 Nov to 4 Dec, found 5 days ago.
How far ahead should I book a flight from Washington to London?
In 49 days of prices between 24 Sept and 11 Nov, return fares 60 to 89 days before departure were typically 37% lower than 0 to 6 days before departure.
Is there a direct flight from Washington to London?
Yes, the cheapest nonstop return found recently is $1,033 with Virgin Atlantic, 3 Dec to 13 Dec, found 2 days ago.
Which airlines have the cheapest flights from Washington to London?
Between 16 Nov and 22 Oct 2027, Air Canada has the cheapest return on 3 of the 8 departure dates we hold, TAP Air Portugal on 2 and Frontier Airlines on 1.
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