Houston to London flights.
Live cached fares on Houston (IAH) → London (LHR), refreshed every 30 minutes. Non-stop and connecting itineraries side by side — compare airlines, times and stops, then book in one click.
- Flying time~9h non-stop
- AirlinesBritish Airways, United
- Cheapest monthsJanuary, November
Flex dates · cheapest nearby
Loading prices…Houston → London · 2 fares
Cached from Travelpayouts · filter & sort below- Cheapest
Spirit · NK 938OutboundIAH → LHRThu, Jun 4 · 10:29 PM· 12h 31m· 2 stopsReturnLHR ← IAHThu, Jun 11 · 1:10 PM· 13h· 1 stop 
United Airlines · UA 2388OutboundIAH → LHRSun, Jun 7 · 9:35 PM· 10h 36m· 1 stopReturnLHR ← IAHThu, Jun 18 · 2:00 PM· 14h 1m· 1 stop
Try a nearby airport
Thin routes often have more options from a neighbouring airport.
About Houston → London
Two daily non-stops (BA, UA). Houston is the logical connector for Texas → Europe + the Star hub at IAH to all of North America.
Typical non-stop flying time is around 9 hours. Major carriers on this route include British Airways, United. Fares are usually cheapest in January, November — book 6–10 weeks ahead and avoid school-holiday peaks (late June–August, Christmas–New Year) for the best pricing.
Month-by-month price guide: Houston to London
Live cheapest round-trip fare cached on IAH → LHR for each of the next 12 months. Tap any month and run a live search to confirm.
- AprNo data
- MayNo data
- JunShoulderfrom $1125
- JulNo data
- AugNo data
- SepNo data
- OctNo data
- NovNo data
- DecNo data
- JanNo data
- FebNo data
- MarNo data
Long-haul fares are most predictable when booked 10-16 weeks ahead. Inside six weeks expect sharp increases, especially in premium cabins. If you're paying with miles, search 330+ days ahead when award inventory first loads.
Questions, answered
How long is the flight from Houston to London?
Non-stop flights on IAH → LHR are typically around 9 hours. Connecting itineraries add 3–8 hours depending on the hub and layover.
Which airlines fly from Houston to London?
The main carriers on this route are British Airways, United. Codeshare and one-stop options add several more — the filter panel above shows every airline in the current fare set.
When is the cheapest time to fly from Houston to London?
Historically the lowest fares land in January, November. Summer (mid-June through mid-August) and the Christmas / New Year window are always peak. Mid-week departures (Tuesday–Thursday) typically beat weekend prices by 10–20%.
How far ahead should I book Houston to London?
Six to ten weeks ahead is the sweet spot for this route. Inside three weeks, fares tend to spike as airlines sell to last-minute business travellers. Award availability often opens 10–11 months out if you're booking on miles.
Can I book directly on destination.com?
The Book button on each fare opens the airline or OTA (Trip.com, Kiwi, Expedia, Booking, Priceline, etc.) that's actually selling that ticket. You complete payment there at the same price you saw here — we never add a markup.
Other ways to reach London
If your plans are flexible on the origin, these alternate departure airports also serve London on the routes we track.
- New York → LondonJFK · ~7h · British Airways, American
- Washington → LondonIAD · ~7h · British Airways, United
- Los Angeles → LondonLAX · ~10.5h · British Airways, Virgin Atlantic
- Miami → LondonMIA · ~9h · British Airways, American
- Dallas → LondonDFW · ~9h · British Airways, American
- Chicago → LondonORD · ~8h · British Airways, United
- Atlanta → LondonATL · ~8.5h · British Airways, Delta
- Boston → LondonBOS · ~6.5h · British Airways, Delta
Other popular routes
- New York → London~7h · British Airways, American
- New York → Paris~7.5h · Air France, Delta
- New York → Rome~9h · Delta, American
- New York → Milan~8.5h · Delta, American
- New York → Madrid~7.5h · Iberia, Delta
- New York → Barcelona~8h · Iberia, Delta
- Boston → Dublin~6.5h · Aer Lingus, Delta
- Washington → London~7h · British Airways, United