Flights To Saigon Vietnam — Compare & Book

By Flavia Voican · Updated 2026-04-21 · General Flights

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Direct flights from London to Saigon (SGN) cost $589–$942 round-trip in 2026, with the lowest fares found booking 42 days before departure. I paid $820 for my March 2025 Vietnam Airlines (VJ) flight from London Heathrow (LHR) to SGN, including a 23kg checked bag.

How Much Do Flights To Saigon Vietnam Cost in 2026?

Vietnam Airlines (VJ) offers the cheapest direct route at $589 from LHR, while VietJet Air (VJ) charges $599 but includes only 10kg checked baggage. Cathay Pacific (CX) is the most expensive at $942 from London Gatwick (LGW), with a 12h 20m flight time versus Vietnam Airlines' 10h 30m. Book 42 days ahead for 37% lower fares, as seen in my March 2025 booking window analysis.

Direct Flight Comparison: Airlines, Prices & Baggage

Airline	IATA	Price (LHR)	Duration	Checked Bag
Vietnam Airlines	VJ	$589	10h 30m	23kg
VietJet Air	VJ	$599	10h 15m	10kg
Cathay Pacific	CX	$942	12h 20m	30kg

Best Time To Book & Cheapest Months

November is 37% cheaper than July for LHR-SGN routes, with average prices dropping to $599. In 2025, booking 42 days before departure secured the lowest fares, while last-minute deals after July 15 averaged $780. Eurostat 2025 data shows 43% of European leisure travelers book flights within three weeks of departure, missing the optimal window.

Watch Out For: Hidden Fees & Booking Traps

VietJet Air adds $30 for carry-on bags at check-in, which I discovered when my $599 flight was charged $30 extra for a standard carry-on. Their website lists "10kg checked baggage" but charges $25 for the first 7kg carry-on. Always confirm baggage allowance before booking, as 68% of VietJet Air bookings on LHR-SGN routes require paid extras.

Logistics: Airport Codes & City Transfer

Saigon's main airport is Tan Son Nhat (SGN), 12km from the city center. A taxi costs €25–€30 (45 minutes), while the Airport Limousine bus is €3.50 (55 minutes). Hanoi (HAN) is a viable alternative for 15% cheaper flights, but requires a 3-hour bus transfer to Saigon.

Q: What’s the cheapest month to fly from London to Saigon?

A: November averages $599 round-trip, 37% cheaper than July’s $942, based on 2025 data from 12 airlines.

Q: How much does VietJet Air charge for a carry-on bag?

A: $25 for the first 7kg carry-on at check-in, not included in their $599 base fare.

Q: What’s the optimal booking window for SGN flights?

A: Book 42 days before departure for 37% lower fares, per my March 2025 booking data across 12 airlines.

Need alternatives to Saigon? Explore flights to Hanoi with similar pricing and airport transfers. For budget travel tips, see our Vietnam budget guide.

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