Compare cheap Kolkata to Siem Reap flights — IndiGo non-stop & 1-stop fares via Bangkok. CCU-SAI schedule, flight time, Cambodia e-visa & booking 2026.
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Quick answer: Kolkata to Siem Reap flights take about ≈ 3h 10m (non-stop), operated by IndiGo (6E) non-stop; Thai AirAsia / Thai Airways via Bangkok, ≈ 3 non-stops weekly (IndiGo), plus 1-stop options via Bangkok. This is a domestic route within India, so no visa is required. Use the live search above to compare today's cheapest CCU–SAI fare across every airline, OTA and travel agent in one place.
Last reviewed June 2026 by the FlightGPT flights desk · route facts cross-checked against DGCA and the Airports Authority of India (AAI) · fares are live — verify the final price in search before booking.
Looking for cheap flights from Kolkata to Siem Reap? FlightGPT compares live CCU to SAI fares across every connected source — Indian carriers, Gulf hubs, OTAs and trusted travel agents — and shows the cheapest options side by side. Whether you want a Kolkata to Siem Reap non-stop tomorrow, a last-minute weekend deal or the lowest price three months out, every active Kolkata-Siem Reap fare is one search away.
As of June 2026, indicative one-way Kolkata to Siem Reap economy fares typically run ₹11,000–₹20,000, with the lowest buckets opening from around ₹10,000–₹11,000 on IndiGo's non-stop when booked 4–6 weeks ahead for an off-peak mid-week departure. During the November–February cool season and year-end peak, fares climb to ₹20,000–₹30,000.
The non-stop is usually the cheapest as well as fastest. These are indicative ranges, not a live quote; for the exact cheapest Kolkata to Siem Reap fare on your dates, ask in the FlightGPT chat.
IndiGo (6E) is currently the only carrier with a non-stop Kolkata–Siem Reap service, running roughly three times a week on A320 aircraft to the new SAI airport. For 1-stop alternatives, Thai AirAsia and Thai Airways route via Bangkok. See our IndiGo guide.
If the IndiGo non-stop does not fit your date, a 1-stop via Bangkok opens more departure times. On connecting itineraries book a single through-ticket so your bags are checked through. For comparison, our Bangalore to Siem Reap page covers the southern corridor.
IndiGo typically operates the Kolkata–Siem Reap non-stop about three days a week, so it does not fly daily — check the exact days when booking. The non-stop blocks about 3h 10m; the return SAI–CCU is similar (Cambodia is 1h 30m ahead of India).
If you connect via Bangkok instead, build in a sensible layover buffer. See our Siem Reap destination guide for arrival-day planning.
For most travellers the non-stop is the clear winner: ~3h 10m gate-to-gate versus 6–11 hours for a 1-stop via Bangkok, often for a similar or lower fare. The catch is frequency — with roughly three non-stops a week, your preferred date may not have one.
When the non-stop does not fit, a 1-stop via Bangkok on Thai AirAsia or Thai Airways opens far more departure times. If you connect, book a single through-ticket so baggage is checked through and you are protected if the first leg runs late.
For this limited-frequency route, the sweet spot is 4–6 weeks before departure for normal travel and 8–12 weeks ahead for the cool season and year-end peak, when the cheapest classes on the few non-stops vanish first.
Set a price alert in the FlightGPT chat, watch IndiGo's 6E sale, and stack a bank-card offer. Our 2026 online booking guide covers the tactics.
Because the non-stop runs only about three days a week, your travel days are partly fixed by the schedule. Within those, the cheapest buckets sell early, so book ahead. On 1-stop alternatives, mid-week Bangkok connections are typically cheaper than weekend ones.
Avoid the year-end fortnight and major Cambodian festival periods (such as Khmer New Year in April). Flying out and back on the schedule's mid-week days is usually the lowest-cost combination — worth comparing in the FlightGPT chat.
On international economy, IndiGo typically includes around 25–30 kg checked plus 7 kg cabin on Kolkata–Siem Reap; on 1-stop Thai AirAsia itineraries the base fare is often hand-baggage-only, with checked bags as a paid add-on. Allowances vary by fare type and can change, so confirm on your specific fare.
Pre-paid extra baggage online is cheaper than at the counter. Seat selection, meals and priority are chargeable extras. Verify every fee on the airline's official site before booking.
You arrive at the new Siem Reap-Angkor International Airport (SAI), opened in 2023 about 40 km southeast of the city to protect the Angkor temples. Cambodia's e-visa holders use the standard lanes; an e-Arrival card is also required, completed online before arrival.
From SAI, airport taxis and pre-arranged hotel transfers reach central Siem Reap in about 45–60 minutes. For what to do on arrival, see our Siem Reap destination guide.
Indian passport holders need a visa for Cambodia. The simplest route is the Cambodia e-Visa (Type-T tourist), applied for online via the official government portal — it allows a stay of up to 30 days and is valid for entry within 90 days of issue. As of June 2026 the e-Visa fee is around US$36 including the service charge. You must also complete the Cambodia e-Arrival form online. Your passport must be valid for at least six months.
Apply only through the official portal and carry a printed copy. Rules change, so confirm the latest before booking — see our Cambodia visa guide for Indians. Official Cambodia e-Visa portal.
On international tickets, each airline sets its own cancellation and change fees by fare type. Cheaper IndiGo and Thai AirAsia fares carry higher penalties or are non-refundable except for taxes; flexible fares allow changes for a smaller fee plus fare difference. Read the fare rules at booking and verify current penalties on the airline's site.
If the airline cancels your non-stop, you are entitled to a refund or rebook under its conditions of carriage. Given the three-weekly frequency, a cancellation can mean a multi-day wait for the next non-stop, so travel insurance is worth considering for important trips.
Use the FlightGPT chat to compare IndiGo's non-stop plus Thai AirAsia, Thai Airways and the major OTAs in one query, so you instantly see whether the direct flight or a Bangkok connection is cheaper on your date. Pair it with our UPI vs credit-card guide.
Book 4–6 weeks ahead for normal travel and 8–12 weeks for the cool season, arrange your Cambodia e-Visa and e-Arrival before flying, and pre-pay any extra baggage. If your dates are flexible, also check our Kolkata to Bangkok and Kolkata to Chiang Mai pages.
As of June 2026, the cheapest Kolkata to Siem Reap one-way fares are indicatively around ₹10,000–₹11,000 on IndiGo's non-stop booked 4–6 weeks ahead for an off-peak mid-week departure. Typical fares run ₹11,000–₹20,000, with cool-season/year-end peaks higher. For a live fare, ask in the FlightGPT chat.
Yes. IndiGo flies Kolkata–Siem Reap non-stop roughly three times a week, currently India's only direct link to Siem Reap, in about 3 hours 10 minutes for the 1,960 km on an A320. On dates without a non-stop, a 1-stop via Bangkok takes 6–11 hours.
Yes. Indian passport holders need a Cambodia visa. The simplest is the e-Visa (Type-T tourist) applied for online for around US$36, allowing a 30-day stay. You must also complete the Cambodia e-Arrival form online before arrival. Carry a printed copy of both.
You land at the new Siem Reap-Angkor International Airport (SAI), opened in 2023 about 40 km southeast of the city to protect the Angkor temples. Airport taxis and hotel transfers reach central Siem Reap in about 45–60 minutes.
Book 4–6 weeks ahead for normal travel and 8–12 weeks ahead for the November–February cool season and year-end peak. The non-stop runs only about three days a week and its cheapest buckets sell early, so booking ahead gives the lowest fare.
Kolkata to Siem Reap prices swing with demand, season and lead time more than with any single airline. The reliable lever is comparison: pull every CCU–SAI fare at once and shift your date by a day or two. Mid-week and red-eye departures on IndiGo (6E) non-stop; Thai AirAsia / Thai Airways via Bangkok are usually where the cheapest seats sit.
For a same-week Kolkata–Siem Reap trip, the trick is to check all carriers at once rather than one app at a time. FlightGPT's live CCU-SAI search does exactly that — red-eye and early-morning departures often carry the lowest last-minute prices. Enter your date above to compare instantly.
There is currently no non-stop service between Kolkata and Siem Reap — itineraries connect via a hub, with a typical journey of ≈ 3h 10m (non-stop). Comparing hubs side by side often saves 15-30 percent. FlightGPT lets you filter by "Direct only" or compare both side by side — useful when you want the cheapest Kolkata Siem Reap ticket but are open to a layover.
On Kolkata to Siem Reap, the headline price and the price you actually pay can differ once baggage and seat selection are added. That's why FlightGPT compares fully-bundled Kolkata Siem Reap fares across IndiGo (6E) non-stop; Thai AirAsia / Thai Airways via Bangkok — the cheapest all-in option, not the lowest sticker that balloons at checkout.