Flights Bangkok to Mumbai (BKK-BOM): Airlines, THB Fares

Bangkok to Mumbai connects Thailand with India’s financial capital, with around 21 flights a week. The traffic runs both ways — Indian business travellers and tourists heading to Thailand, and Thai travellers, traders and holidaymakers bound for Mumbai. Block time is about four and a half hours, comfortably within a single daytime or overnight sector.

Corridor profile

The BKK–BOM corridor runs about 21 departures a week across 3 carriers, with an average block time of 4.5 hours, and the lowest fare the feed returned for this route is ฿8,673. The frequency figure counts every carrier on the route combined, not any single airline.

What frequency tells you when plans break. 21 weekly departures is ~3.0 departures a day — the next departure is usually same-day or next-day. That is why frequency matters more than price for anyone with a fixed commitment at the other end. A thin corridor deserves a buffer day before anything that cannot move, not because the airline is poor but because there is no spare inventory to shift you onto.

Combined frequency is not your airline’s frequency. Those 21 weekly departures are spread across 3 carriers, and when your flight is cancelled only the airline holding your ticket owes you a seat. A rival’s empty seat on the same city pair does not help unless an interline agreement exists or you are willing to buy a second ticket. That is why a multi-carrier route is not automatically the safer one it appears to be.

Airlines & baggage

Baseline baggage on BKK–BOM runs 15–30 kg across the 3 of 3 carriers on the route for which we hold a row. These are carrier reference baselines, not entitlements attached to every ticket: cabin class, fare brand and frequent-flyer status all change the weight you actually get.

An infant fare is not a free seat. We record Thai Airways’s infant fare at about 10% of the adult fare. That rate is for a lap infant with no seat of its own. Want a separate seat or a car seat and it becomes a child fare, priced as a share of the full fare, and the infant’s own baggage entitlement is usually far smaller than an adult’s. Strollers normally travel outside the weight allowance, but the policy differs by carrier — confirm before you fly.

Airlines on this route

3 carriers operate BKK–BOM — 2 full-service and 1 low-cost. Alliances present on the route: Star Alliance. Multiple carriers only affect price when both sides are actually selling in the same window. We hold 7 monthly lows spanning a 20% range.

Three carriers fly BKK-BOM: Thai Airways and Air India operate full-service, while IndiGo flies it as a low-cost service. Thai and Air India include a checked allowance and meals; IndiGo sells a lean base fare with bags and food added on. All three fly the route direct, so the choice comes down to schedule, included baggage and price rather than connection time.

What an alliance buys, and what it does not. Star Alliance on this route means through-checked bags, conditional lounge access, and — the part that matters — a realistic chance of being moved onto a partner’s aircraft when things break. What an alliance does not buy is compensation. That comes only from the law of the jurisdiction involved, never from a logo on the ticket.

Fare trends

Between 2026-W20 and 2026-W31 we captured the BKK–BOM low 3 times, ranging ฿4,007 to ฿8,673 — a 116% spread. The cheapest reading fell in week 2026-W29, and from first capture to last the low moved up 102%.

Fares on BKK-BOM are moderate for an international route of this length, helped by IndiGo keeping the budget end competitive. The Diwali season and the Indian wedding months push demand up, and those weeks are worth booking two to three months ahead. For ordinary dates, four to six weeks of lead time usually secures a workable economy fare in THB, with the low-cost option cheapest for light packers.

Who holds the floor. Across 3 captures Thai Vietjet held the low 1 times and no other carrier took it once in this window, which makes that airline’s price the corridor’s reference number. With N=3 and a weekly cadence, short promotions can slip between captures.

How to read a 116% spread. The gap between the cheapest and dearest week is the size of the movement this corridor showed in the window we observed. A wide spread means timing matters a lot; a narrow one means the fare is stable and watching it is not worth your time. The figure measures only the lows we captured, not every seat sold that week.

Seasonality & best time to book

Our catalogue lists 3 carriers on this city pair. BKK–BOM is a regional corridor with a shorter booking window than long-haul. The fare tracks low-cost promotional cycles and Thai long weekends more than any season at the destination, and Songkran plus the consecutive-holiday blocks are the tightest weeks of the year.

Bangkok–Mumbai fares move with demand. The cheapest windows fall outside school holidays, Songkran and New Year; book 4–8 weeks ahead for normal dates.

Thai public holidays are the controllable variable. The holiday calendar is published a year ahead and is the one part of the equation you know before the airline reprices. Shifting out of a consecutive-holiday week by even two days moves you off the tightest demand for both seats and rooms — a bigger effect than switching airline.

Frequency is seasonal too, not just price. The 21 weekly departures in our catalogue is an estimate of the standard schedule; carriers add and cut rotations by season. That means the cheapest month can also be the month with the fewest options — and with fewer rotations, one cancellation hurts more. Read price and frequency together.

About Mumbai

Mumbai (BOM) sits in India. The flight from Bangkok runs about 4.5 hours. We hold 7 monthly lows spanning a 20% range. This corridor scores 6/10 on our own catalogue demand ranking. Our catalogue lists 3 carriers on this city pair.

Mumbai is India’s financial and entertainment capital — home to the country’s stock exchange, its film industry and a coastline of colonial-era architecture along the Arabian Sea. It is a dense, fast-moving city with the Gateway of India, the markets of Colaba and a deep food culture. For Thai travellers it is most often a business destination or the first stop on a wider trip across India.

India — the rule we record. e-Tourist Visa (eTV) · USD 25 (30 days), USD 40 (1 year) · 30 days to 1 year depending on the type Requires a photo and a passport scan; processing takes 3–5 days. Verify the current text at the official source. This set was reviewed on the date stamped in our visa-rules file and requirements change without notice — confirm with the embassy or the immigration portal before buying a non-changeable ticket.

Passenger rights on BKK–BOM

Our catalogue lists 3 carriers on this city pair. Departures from Thailand fall under Thailand CAAT; the return from Mumbai falls under India DGCA (CAR Section 3). The two regimes are not the same, and what you are owed changes with the direction of travel and the nationality of the operating carrier — never with the fare you paid.

No European-style compensation schedule applies here. The destination sits with India DGCA (CAR Section 3), which typically imposes duty of care, re-routing and refund obligations but no fixed EU261-style cash bands. The enforceable floor is therefore the airline’s own conditions of carriage plus Thailand CAAT rules for departures from Thailand. Read the conditions of carriage before you buy — that is the document that actually binds you.

Baggage loss and delay run on a separate rulebook. An airline’s liability for baggage that is lost, damaged or delayed on an international journey sits under the Montreal Convention 1999 where both the origin and destination states are parties. The caps are denominated in SDR and revised periodically, so only the current figure is usable. This frame is entirely separate from delay compensation: you can have no compensation claim and still have a baggage claim.

FAQ

Which airlines fly Bangkok to Mumbai?

The BKK-BOM route is operated by Thai Airways, Air India and IndiGo. Compare baggage, alliances and fares in the table above.

How long and how often is the BKK-BOM flight?

Block time is ~4.5h, with ~21 flights per week across all carriers.

When is BKK-BOM cheapest to book?

Book 4–8 weeks ahead; avoid Songkran, school holidays and peak season to save 15–30%.

What exactly is the lowest fare shown on this page?

It is the cheapest fare our cache has recorded on BKK–BOM, captured one snapshot at a time. It is not an average, not a live quote and not a guarantee that a seat still exists at that price. Use it as a reference floor, then check live pricing.

What is the difference between a direct and a nonstop flight?

Direct means the flight number does not change, but the aircraft may still land en route. Nonstop means no intermediate landing at all. If the clock matters, filter on nonstop, not direct.

If my BKK–BOM flight is cancelled, who is responsible?

The destination sits with India DGCA (CAR Section 3), which generally imposes duty of care, re-routing and refunds but no fixed EU261-style cash bands. The enforceable floor is the airline’s conditions of carriage plus Thailand CAAT rules for departures from Thailand.

Will my bag be through-checked if I book two separate tickets?

No. Through-checking happens only when every sector is on one ticket or an interline agreement exists. On separate tickets you reclaim the bag, clear the transit country’s immigration and check in again — and a missed connection is a new ticket at your cost.

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Related

• BKK airport
• BOM airport