Flights Bangkok to Phnom Penh (BKK-PNH): Airlines, THB Fares

Bangkok to Phnom Penh is one of the shortest international routes out of Bangkok — a one-hour hop to Cambodia’s capital. It runs on a steady mix of business travel, tourism, regional family ties and onward connections, with around 21 flights a week keeping it frequent.

Block time is barely an hour, short enough that the airport time outweighs the flight. With a mostly low-cost line-up, the route behaves like a regional bus service — easy availability, and a decision that comes down to timing and the all-in fare.

Corridor profile

The BKK–PNH corridor runs about 21 departures a week across 3 carriers, with an average block time of 1.0 hours, and the lowest fare the feed returned for this route is ฿4,608. The frequency figure counts every carrier on the route combined, not any single airline.

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.

“Direct” and “nonstop” are not synonyms. The 1.0-hour figure is an average gate-to-gate block time for a nonstop, taxi time included but connections, check-in and immigration excluded. In booking systems “direct” means only that the flight number does not change — a single-number flight can still put down en route to refuel or pick up passengers. The word that guarantees no intermediate landing is nonstop. Filter on that one if the clock matters.

Airlines & baggage

Baseline baggage on BKK–PNH runs 7 kg across the 2 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.

Excess weight prices in steps, not in averages. The allowance is per passenger, not per booking, so bags belonging to one group do not automatically pool unless the carrier operates a shared-allowance policy for people booked together. Excess charged at the desk is almost always far dearer than extra weight bought online in advance, and advance purchase stays open until the carrier’s cut-off. Weighing bags at home is the highest-value minute in the whole process.

Some items are not measured in kilograms alone. Sports equipment, instruments, pushchairs and oversized boxes are handled under size and item-type rules rather than the kilogram figure in the table. Several categories need advance notice because hold space is finite, and lithium batteries carry separate safety requirements that bar them from checked baggage. Check all three before travel day — at the desk the only remaining options are abandon it or ship it separately.

Airlines on this route

3 carriers operate BKK–PNH — predominantly unbundled. No major-alliance carrier appears on this route. Multiple carriers only affect price when both sides are actually selling in the same window. The lowest fare the feed returned for this route is ฿4,608 on a 2026-08-31 departure.

Three carriers fly BKK-PNH: Thai AirAsia and Thai Vietjet on the low-cost side, with Cambodia Angkor Air covering the route as well. The low-cost carriers price the base seat low and sell baggage, seats and meals separately; on a flight this short many travellers fly cabin-baggage-only. When comparing fares, the figure that matters is the total once whatever baggage you need is added.

Compare totals, not headline numbers. Thai AirAsia and Thai Vietjet price the seat low and sell bag, seat and meal separately; the full-service carriers fold them into the fare. Comparing the first number you see compares two different products. Add one bag and one seat assignment on both sides, then read the final figure. On medium-haul and longer, the remaining gap is frequently smaller than the search page suggests.

Monthly market-low pattern (THB)

Fare trends

Between 2026-W29 and 2026-W31 we captured the BKK–PNH low 3 times, ranging ฿4,608 to ฿4,625 — a 0% spread. The cheapest reading fell in week 2026-W31, and from first capture to last the low moved flat 0%.

BKK-PNH fares are low and competitive, kept that way by the short distance and the low-cost line-up. The cheapest seats are the early-released fares — booking two to five weeks ahead usually lands a good THB price, and mid-week departures undercut weekends. Demand rises around regional holidays. For a hop this short, travelling light is the simplest way to keep the cost down.

This is the lowest fare our feed returned for BKK–PNH, not a quoted price. It is the minimum of the record we hold for this one corridor — not the lowest value in our fare cache, not an average, not a live quote, and not a promise that a seat still exists at that number. An unusually low reading almost always traces to one carrier’s limited promotional inventory, which is gone before you reach checkout. Treat it as a reference line for how low this corridor can go, then check live pricing before deciding.

Seasonality & best time to book

Our catalogue lists 3 carriers on this city pair. BKK–PNH 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–Phnom Penh fares move with demand. The cheapest windows fall outside school holidays, Songkran and New Year; book 4–8 weeks ahead for normal dates.

The booking window matters more than the booking day. On a 1.0-hour corridor the fare tracks how many seats remain in each fare bucket, not which weekday you click buy. The folklore about a magic booking day has no support in the series we capture. What does show up is widening your travel dates by a day or two.

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.

About Phnom Penh

Our catalogue lists 3 carriers on this city pair. Phnom Penh (PNH) sits in Cambodia, uses KHR, and the visa position we record for a Thai passport is: visa-free 30 days (ASEAN). The flight from Bangkok runs about 1.0 hours. Phnom Penh — Cambodian capital

Phnom Penh is the capital of Cambodia, set where three rivers meet — a city of riverside boulevards, the Royal Palace grounds, markets and a number of significant historical sites. It is compact and walkable, and inexpensive on the ground. For travellers from Bangkok it works as a short city break and as a starting point for travel onward across Cambodia, including the connection toward the Angkor temple region.

The fare is in baht; the trip is not. Every price here is quoted in THB while ground costs at the destination are in KHR. Exchange spread and card conversion fees are the line most often omitted when comparing a whole-trip budget. Choosing to be charged in baht on a foreign terminal means accepting the merchant’s rate, which is almost never better than your issuing bank’s.

Passenger rights on BKK–PNH

Our catalogue lists 3 carriers on this city pair. Departures from Thailand fall under Thailand CAAT; the return from Phnom Penh falls under the destination’s civil-aviation regulator. 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 the destination’s civil-aviation regulator, 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 Phnom Penh?

The BKK-PNH route is operated by Thai AirAsia, Cambodia Angkor Air and Thai Vietjet. Compare baggage, alliances and fares in the table above.

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

Block time is ~1.0h, with ~21 flights per week across all carriers.

When is BKK-PNH cheapest to book?

The lowest fare our feed returned for this route is ~฿2,039. 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–PNH, 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–PNH flight is cancelled, who is responsible?

The destination sits with the destination’s civil-aviation regulator, 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
• PNH airport