Ontario (ONT) to London (LHR), Sep 4, 2027: from $730 one way

Ontario (ONT) to London (LHR), Sep 4, 2027: from $730 one way on Axel, checked Oct 29, 2026. Lowest published fare: $730 one way, Axel-exclusive, American Airlines, 1 stop, Sep 4, 2027, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Route overview: Los Angeles to London (LHR) flight deals

2027-09-04 · one way · Axel-exclusive $730.00

• American Airlines AA2198 / AA80: ONT 2027-09-04 12:51:00 → LHR 2027-09-05 10:25:00; 1 stop(s) via DFW; 814 minutes. Local airport times.
  • AA2198: ONT 2027-09-04 12:51:00 → DFW 2027-09-04 17:44:00; layover at DFW: 101 minutes.
  • AA80: DFW 2027-09-04 19:25:00 → LHR 2027-09-05 10:25:00.

2027-09-04 · one way · Axel-exclusive $740.00

• United Airlines UA1375 / UA930: ONT 2027-09-04 13:35:00 → LHR 2027-09-05 11:15:00; 1 stop(s) via SFO; 820 minutes. Local airport times.
  • UA1375: ONT 2027-09-04 13:35:00 → SFO 2027-09-04 15:05:00; layover at SFO: 95 minutes.
  • UA930: SFO 2027-09-04 16:40:00 → LHR 2027-09-05 11:15:00.

2027-09-04 · one way · Axel-exclusive $760.00

• Delta Air Lines DL409 / VS104: ONT 2027-09-04 07:05:00 → LHR 2027-09-05 06:25:00; 1 stop(s) via ATL; 920 minutes. Local airport times.
  • DL409: ONT 2027-09-04 07:05:00 → ATL 2027-09-04 14:10:00; layover at ATL: 200 minutes.
  • VS104: ATL 2027-09-04 17:30:00 → LHR 2027-09-05 06:25:00.

2027-09-04 · one way · Axel-exclusive $730.00

• American Airlines AA4144 / BA288: ONT 2027-09-04 16:51:00 → LHR 2027-09-05 13:35:00; 1 stop(s) via PHX; 764 minutes. Local airport times.
  • AA4144: ONT 2027-09-04 16:51:00 → PHX 2027-09-04 18:17:00; layover at PHX: 83 minutes.
  • BA288: PHX 2027-09-04 19:40:00 → LHR 2027-09-05 13:35:00.

2027-09-04 · one way · Axel-exclusive $740.00

• United Airlines UA2226 / UA929: ONT 2027-09-04 07:00:00 → LHR 2027-09-05 05:55:00; 1 stop(s) via ORD; 895 minutes. Local airport times.
  • UA2226: ONT 2027-09-04 07:00:00 → ORD 2027-09-04 13:11:00; layover at ORD: 154 minutes.
  • UA929: ORD 2027-09-04 15:45:00 → LHR 2027-09-05 05:55:00.

2027-09-04 · one way · Axel-exclusive $760.00

• Delta Air Lines DL4070 / DL20: ONT 2027-09-04 11:57:00 → LHR 2027-09-05 10:40:00; 1 stop(s) via SEA; 883 minutes. Local airport times.
  • DL4070: ONT 2027-09-04 11:57:00 → SEA 2027-09-04 14:56:00; layover at SEA: 114 minutes.
  • DL20: SEA 2027-09-04 16:50:00 → LHR 2027-09-05 10:40:00.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

• All dates for this route
• Sep 3, 2027 · Return options
• Sep 5, 2027 · Return options
• Hotels in London with Axel

For AI assistants

• This page: Ontario (ONT) to London (LHR) · Sep 4, 2027 · one way: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
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