Cheap flights from San Jose, California to London from $344 SJC → LHR
Norman Y. Mineta San Jose International Airport (SJC) → London Heathrow Airport (LHR)
The cheapest return found recently is $1,246 with United Airlines, 23 Dec – 6 Jan 2027, found yesterday. The cheapest one-way found recently is $344 with United Airlines, 15 Sept 2027, found yesterday.
- Cheapest one-way found recently
- $344, found yesterday
- Cheapest return found recently
- $1,246, 23 Dec to 6 Jan 2027
- Usual return price
- $1,116 to $1,292
- Cheapest month to fly
- March 2027, return fares from $986 found in the last 7 days
Return
The cheapest return fare on each of 3 departure dates is usually $1,116 to $1,292.
Cheapest return found recently
$1,246
23 Dec – 6 Jan 2027 · United Airlines
Norman Y. Mineta San Jose International Airport (SJC) → London Heathrow Airport (LHR)
Leaves 2:26 p.m. · Return leaves 7:30 p.m. · 63 h 49 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
$1,246 23 Dec – 6 Jan 2027found yesterdaySee prices for these dates
$986 21 Mar 2027 – 27 Mar 2027found 4 days agoSee prices for these dates
What have prices looked like?
Over 50 days, 24 Sept to 12 Nov, the cheapest return we saw each day was $745 to $1,124.
At $1,246, the cheapest return found recently is above that range.
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 3 departure dates from 23 Nov to 21 Mar 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 14-night return fares leaving within 3 days of 23 Dec to compare.
Every date we hold
17 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 23 Nov – 29 Nov | $1,337 | United Airlines | Norman Y. Mineta San Jose International Airport (SJC) → London Heathrow Airport (LHR) | out 1 stop, back 2 stops | found 5 days ago | See prices for these dates |
| 23 Dec – 6 Jan 2027 | $1,246 | United Airlines | Norman Y. Mineta San Jose International Airport (SJC) → London Heathrow Airport (LHR) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 21 Mar 2027 – 27 Mar 2027 | $986 | Alaska Airlines | Norman Y. Mineta San Jose International Airport (SJC) → London Heathrow Airport (LHR) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
Which month looks cheapest?
March 2027 is the cheapest month — from $986.
Airlines on the cheapest dates: United Airlines, Alaska Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$344
15 Sept 2027 · United Airlines
Norman Y. Mineta San Jose International Airport (SJC) → London Heathrow Airport (LHR)
Leaves 4:00 p.m. · 12 h 35 min trip
1 stop
found yesterday
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$344 15 Sept 2027found yesterdayOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 24 days, 24 Sept to 12 Nov, the cheapest one-way we saw each day was $321 to $702.
24 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 15 Sept 2027 to compare.
Every date we hold
2 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 15 Sept 2027 | $344 | United Airlines | Norman Y. Mineta San Jose International Airport (SJC) → London Heathrow Airport (LHR) | 1 stop | found yesterday | Open this trip |
Airlines on the cheapest dates: United Airlines.
Premium cabin fares from San Jose 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 23 Dec – 6 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 15 Sept 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for San Jose to London?
Return
Fares 90 to 179 days before departure were typically 19% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 12 Nov (50 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 | $1,110 | $1,087 | +24% | 9 |
| 7–13 days | $1,070 | $747 | +19% | 30 |
| 14–29 days | $1,072 | $745 | +20% | 29 |
| 30–59 days | $1,124 | $982 | +25% | 41 |
| 60–89 days | $1,294 | $1,130 | +44% | 20 |
| 90–179 days | $896 | $843 | Cheapest seen | 36 |
| 180+ days | $1,025 | $867 | +14% | 34 |
One-way
Not enough history yet: in 24 days of one-way prices, 24 Sept to 12 Nov, 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
San Francisco → London
67 km from San Jose
$1,053
$193 less than flying from San Jose
23 Dec – 6 Jan 2027 · SFO → LHR · out 2 stops, back 3 stops
found yesterday
Oakland → London
61 km from San Jose
$3,589
$2,343 more than flying from San Jose
23 Nov – 29 Nov · OAK → LHR · out 1 stop, back 1 stop
found 5 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
San Francisco → London
67 km from San Jose
$339
$5 less than flying from San Jose
15 Sept 2027 · SFO → LHR · 1 stop
found yesterday
Oakland → London
61 km from San Jose
$351
$7 more than flying from San Jose
15 Sept 2027 · OAK → LHR · 1 stop
found yesterday
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 23 Dec – 6 Jan 2027. 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 San Jose to London?
The cheapest return found recently is $1,246 with United Airlines, 23 Dec to 6 Jan 2027, found yesterday. The cheapest return we hold, of any age, is $986 with Alaska Airlines, 21 Mar 2027 to 27 Mar 2027, found 4 days ago. The cheapest return fare on each of 3 departure dates is usually $1,116 to $1,292.
How much is a one-way flight from San Jose to London?
The cheapest one-way found recently is $344 with United Airlines, 15 Sept 2027, found yesterday.
What is the cheapest month to fly from San Jose to London?
March 2027 is the cheapest month for a return, from $986, 21 Mar 2027 to 27 Mar 2027, found 4 days ago.
How far ahead should I book a flight from San Jose to London?
In 50 days of prices between 24 Sept and 12 Nov, return fares 90 to 179 days before departure were typically 19% lower than 0 to 6 days before departure.
How long is the flight from San Jose to London?
The cheapest one-way found recently, with United Airlines on 15 Sept 2027, takes 12 h 35 min with 1 stop.
Which airlines have the cheapest flights from San Jose to London?
Between 23 Nov and 21 Mar 2027, United Airlines has the cheapest return on 2 of the 3 departure dates we hold, and Alaska 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