# Flights from London (LHR) to Houston (IAH)

1 direct, 55 routes with 1 stop, 5733 with 2 stops. Straight-line distance 7764 km.

## Direct

British Airways, United Airlines flies direct, about 7780 km.

## Shortest routes

- LHR → IAH · 7780 km · about 630 min · 0 stops
- LHR → YUL → IAH · 7779 km · about 809 min · 1 stop
- LHR → CVG → IAH · 7780 km · about 783 min · 1 stop
- LHR → YYZ → IAH · 7783 km · about 808 min · 1 stop
- LHR → PIT → IAH · 7784 km · about 791 min · 1 stop
- LHR → BNA → IAH · 7785 km · about 802 min · 1 stop
- LHR → DTW → IAH · 7791 km · about 801 min · 1 stop
- LHR → BOS → IAH · 7824 km · about 822 min · 1 stop

## How to query this

- JSON: https://travel.buy-it.gr/api/v1/routes/LHR/IAH
- This page: https://travel.buy-it.gr/api/v1/routes/LHR/IAH.md
- HTML, English: https://travel.buy-it.gr/en/flights/LHR-IAH
- All routes: https://travel.buy-it.gr/api/search?from=LHR&to=IAH&maxStops=2
- Operating days for one leg: https://travel.buy-it.gr/api/leg?from=LHR&to=IAH
- Price a path on one date: https://travel.buy-it.gr/api/price?path=LHR,IAH&date=2026-10-10

Replace airport codes in any of those URLs. `path` is comma-separated IATA codes, 2 to 5 airports. `date` is YYYY-MM-DD. `carriers` is optional, legs joined by `|` and airlines inside a leg joined by `.`, for example `FR|LO`.

The first flight must leave on `date`. Each following flight may leave that same day or the next day, and must depart at least 90 minutes after the previous flight lands. A response with `partial: true` on a calendar lists days a source has seen. It does not prove the other days are empty.

No API key. Responses are JSON unless the URL ends in `.md`. Prices are euros. `total: null` means no fare was found for the first flight on that date.