Cheapest Month to Fly Singapore to Bangkok in 2026

Updated: September 2026.

TL;DR verdict

The cheapest months to fly Singapore to Bangkok in 2026 are May and October, when round-trip economy averages SGD 180 to 240 on Scoot, AirAsia, and Thai VietJet. September and February are secondary cheap windows at SGD 200 to 270. Avoid mid April (Songkran) and mid December to early January (year-end holidays), where fares peak at SGD 380 to 550 or higher. Book on a Sunday, 4 to 8 weeks ahead of travel, and fly midweek (Tue, Wed, or Sat) for the tightest headline fare. Note: Jetstar Asia (the Singapore-based subsidiary) ceased operations in July 2025; Jetstar-branded flights on SIN-BKK are now operated by Jetstar Japan or other Jetstar group carriers via connections, not direct.

Month-by-month SIN to BKK 2026

Prices below are averages from Skyscanner, Momondo, and Trip.com public route data for economy round-trip in the 4 to 8 week booking window, per adult, all-in with taxes but excluding checked bag.

Month	Average round-trip (SGD)	Notes
January	280 to 380	Chinese New Year approach, prices climb week of CNY
February	200 to 270	Post-CNY dip, one of the cheaper windows
March	240 to 320	School holiday week (mid March) spikes
April	380 to 550	Songkran mid month drives peak Thai inbound demand
May	180 to 240	Cheapest month overall for SIN-BKK
June	260 to 340	Singapore school holidays spike late June
July	240 to 310	Post-holiday dip, moderate
August	200 to 260	National Day week (mid Aug) mildly elevated
September	200 to 270	Shoulder season, second cheapest window
October	190 to 250	Cheapest window with weather (dry-season start)
November	260 to 340	Loy Krathong mid month; Yi Peng in Chiang Mai adds tail
December	380 to 550	Year-end peak, highest week is 24 Dec to 3 Jan

Momondo's 2026 route data for the reverse direction reports: "July is, on average, the cheapest month to fly to Singapore from Bangkok, with most prices found around $54" (momondo.com, 2026). The one-way outbound-from-Bangkok floor at USD 54 (approximately SGD 71) implies a full round-trip SIN-BKK floor of approximately SGD 140 on LCC dates with early-morning departures.

Momondo also notes: "Tickets reserved on a Sunday cost between 6 percent and 13 percent less than those reserved on a Friday" (momondo.com, 2026). Book from a Singapore IP address on a Sunday morning; clear cookies or use incognito for consistent price displays.

Which airline for which trip

The SIN-BKK route is heavily served with roughly 20 daily rotations combined across LCC and full-service carriers.

Airline	Airport served	Typical fare band	Baggage included	Notes
Scoot	Both (Suvarnabhumi BKK preferred)	SGD 160 to 350	No, upsell required	Widebody 787 mostly; Boeing 737 on some rotations
AirAsia	Don Mueang DMK	SGD 140 to 320	No, upsell required	Cheapest headline, DMK has limited public transit
Thai VietJet Air	Suvarnabhumi BKK	SGD 150 to 300	No	Newer entrant, competitive fares
Singapore Airlines	Suvarnabhumi BKK	SGD 320 to 700	Yes, 30kg included	Premium option, Krisflyer miles earn
Thai Airways	Suvarnabhumi BKK	SGD 340 to 620	Yes, 30kg	Full service; check codeshares with SIA

Jetstar Asia (the Singapore-based subsidiary of Jetstar) ceased operations on 31 July 2025 following the parent Qantas Group decision to wind down the Singapore hub. Direct Jetstar-branded SIN-BKK flights no longer operate as of 2026. If you see a Jetstar codeshare, verify the operating carrier is Jetstar Japan or a partner, not the defunct Jetstar Asia.

Best-book-window mechanics

For an SIN to BKK round trip in a normal-demand month, the price minimum typically hits at approximately 4 to 8 weeks out. Booking under 2 weeks out adds SGD 60 to 180 versus the sweet spot. Booking more than 12 weeks out can also cost more than the sweet spot because LCCs release seats in fare buckets and the deepest promotional buckets usually appear in the 4 to 8 week window.

For peak-demand months (Songkran, year-end), the pattern inverts. Book 12 to 20 weeks out for peak periods, because the promotional buckets run out early and the walk-up walls are unforgiving.

For flexible travellers, subscribe to Scoot's KrisFlyer Spontaneous or set price alerts on Skyscanner and Google Flights. Bangkok often features on Scoot's Take Off Tuesday flash sales (typically midnight SGT to noon Wednesday) at SGD 89 one-way SIN-BKK, roughly 5 to 8 times per year.

When this does NOT apply

Do not chase the SGD 89 one-way flash sale if you are packing more than a 10kg cabin bag. Scoot and AirAsia baggage add-ons at check-in cost SGD 60 to 120 per direction for 20kg checked; the effective SIN-BKK round trip with baggage rises to SGD 260 to 350, at which point Singapore Airlines with included baggage and lounge access on a KrisFlyer promotion (SGD 350 to 450 in shoulder season) is genuinely competitive.

Do not book a 3-day trip if any of your dates fall on Songkran (13, 14, 15 April 2026). Bangkok is water-fight gridlock for 3 to 5 days; hotel rates spike 60 to 120 percent versus baseline; flight fares double. Either commit to 7-plus days for Songkran or shift to late April or May.

Bangkok airport choice

Suvarnabhumi (BKK) is the main international airport, roughly 30 km east of central Bangkok, served by the Airport Rail Link (SGD 2 to 4) and Grab (roughly SGD 15 to 22 to Sukhumvit).

Don Mueang (DMK) is the LCC-focused airport in the north, roughly 25 km from central Bangkok. AirAsia flights land here. Grab from DMK to central Bangkok costs roughly SGD 15 to 25 depending on traffic; there is no direct train link (SRT commuter line has limited service; Airport Bus A1 to Chatuchak MRT costs SGD 2 but takes 45 to 75 minutes).

Choose Suvarnabhumi if your hotel is in Sukhumvit, Silom, or Sathorn. Choose Don Mueang only if the AirAsia fare saves SGD 60-plus versus the Suvarnabhumi alternative and you are okay with the transfer time.

How ShopBack fits the Bangkok trip

Check ShopBack before you book the SIN-BKK flight and the Bangkok hotel. Scoot, Trip.com, and Klook are ShopBack partners in Singapore; cashback rates vary and appear on each merchant page. Compare on ShopBack across Scoot direct, Trip.com, and Klook (which sometimes lists the same Scoot flight at a slightly different fare with different cashback rate) to find the best net-paid price. For the hotel leg, use ShopBack to compare cashback across Agoda, Booking.com, Hotels.com, and Trip.com for the same Bangkok property; net-paid difference on a 4-night stay can reach SGD 20 to 40 in your favour. Activate ShopBack via the browser extension so the referral cookie sets before checkout even when you tap through from Google Flights.

Frequently asked questions

What is the cheapest month to fly Singapore to Bangkok in 2026?

May is the cheapest month for SIN-BKK in 2026, with round-trip economy averaging SGD 180 to 240 on LCCs including Scoot, AirAsia, and Thai VietJet. October is the second cheapest month at SGD 190 to 250 and has better dry-season weather than May.

How far in advance should I book SIN to BKK for 2026?

Book 4 to 8 weeks in advance for normal-demand months (Feb, May, Jul, Sep, Oct). Book 12 to 20 weeks in advance for peak months (April Songkran, December year-end). Same-day and 1-week-out bookings cost 40 to 80 percent more than the sweet spot.

Is Scoot or AirAsia cheaper on SIN to BKK?

AirAsia frequently has the cheapest headline fare at SGD 140 to 320 round-trip, but lands at Don Mueang (DMK) with an inconvenient ground transfer to central Bangkok. Scoot is SGD 160 to 350 and lands at Suvarnabhumi (BKK) which has direct Airport Rail Link access. After transfer cost, Scoot to BKK often nets cheaper for stays in Sukhumvit or Silom.

Which day of the week is cheapest to book SIN-BKK?

Momondo's 2026 route data indicates that "tickets reserved on a Sunday cost between 6 percent and 13 percent less than those reserved on a Friday." Book on Sunday morning Singapore time for consistent savings. Fly out on Tuesday, Wednesday, or Saturday for the cheapest departure day.

Should I fly Singapore Airlines to Bangkok in shoulder season?

Yes, if the KrisFlyer or Advance Purchase promotional fare drops to SGD 350 to 450 round-trip. Singapore Airlines includes 30 kg checked baggage, meal, and lounge access with KrisFlyer PPS, and earns miles at 100 percent of miles-earning economy fare buckets. The net-paid delta versus a Scoot fare with baggage upsell can shrink to SGD 100 to 150 for a meaningfully better trip.

Is Jetstar still flying Singapore to Bangkok in 2026?

No direct Jetstar-branded flight. Jetstar Asia (the Singapore-based subsidiary) ceased operations on 31 July 2025 after the Qantas Group announced the Singapore hub wind-down in June 2025. Jetstar Japan and other Jetstar group carriers still operate some codeshare or connection SIN-BKK options; verify the operating airline at the time of booking.

How much are Bangkok hotels in October 2026?

Bangkok hotels in October 2026 (dry-season start, shoulder month) average SGD 60 to 120 per night for 4-star properties in Sukhumvit or Silom, SGD 150 to 280 per night for 5-star (Marriott, Sheraton, Le Meridien, Rosewood), and SGD 30 to 50 per night for well-reviewed 3-star options near BTS Asok or Nana. Book via Agoda, Booking.com, or Trip.com; check ShopBack for the current cashback rate on each.

Can I use Singapore Airlines KrisFlyer miles to redeem SIN to BKK?

Yes. Saver economy award redemption is 15,000 KrisFlyer miles round-trip SIN-BKK plus roughly SGD 100 in taxes. Advantage award is 22,500 KrisFlyer miles. Business class Saver redemption is 30,500 miles one-way. Award availability in shoulder months is generally strong; peak periods (Songkran, Christmas) are tight and require booking on the day miles release (355 days out).

What travel insurance do I need for Bangkok?

Standard Southeast Asia travel insurance from FWD, MSIG, DirectAsia, or NTUC Income covers Bangkok trips. Expect SGD 15 to 40 for a 5-day single-trip policy with SGD 200,000 medical, trip cancellation, and baggage loss cover. Annual multi-trip policies at SGD 130 to 250 pay back after 3-plus overseas trips per year.

Is Songkran worth flying to Bangkok for?

Yes, if you commit to at least 5 to 7 days and you enjoy the water festival. No, if you want a normal city break; Songkran (13 to 15 April 2026) shuts down normal restaurant, shopping, and transit patterns for roughly 5 days across mid April. Fares double, hotels are 60 to 120 percent higher, and the water fights make daytime commuting impossible without getting soaked.

Can I do Bangkok as a weekend from Singapore?

Yes. Fly out Friday evening (Scoot SIN 20:00 arrives BKK 21:20 local), fly back Sunday evening (Scoot BKK 21:30 arrives SIN 00:50 Monday). Two nights in Bangkok, roughly SGD 350 to 550 all-in per person including flights, hotel, and food. Aim for shoulder months (Feb, May, Sep, Oct) to keep the flight leg under SGD 240 round-trip.

Does ShopBack offer cashback on Scoot, Singapore Airlines, or Trip.com?

Scoot, Singapore Airlines, and Trip.com are ShopBack Singapore partners in 2026. Cashback rates vary by month and by promotion and are shown on each merchant page. Check ShopBack before you tap through to book. Cashback is calculated on the base fare excluding taxes and refunds do not earn cashback.

Should I book a stopover in KL or Penang on the way to Bangkok?

Only if the stopover fare (SIN-KL-BKK on AirAsia) drops below SIN-BKK direct by SGD 50 or more, and you actually want to spend a day in KL or Penang. AirAsia's SIN-KUL-BKK combined economy is typically SGD 180 to 280 round-trip if booked as separate legs; SIN-BKK direct sweeps under SGD 240 in cheap months making the stopover uneconomic on price alone.

Primary sources referenced

• Skyscanner Singapore to Bangkok route data: https://www.skyscanner.com/routes/sin/bkk/singapore-changi-to-bangkok.html
• Momondo SIN-BKK 2026 fare data: https://www.momondo.com/flights/singapore-city/bangkok
• Trip.com SIN to BKK flights: https://sg.trip.com/flights/singapore-to-bangkok/airfares-sin-bkk/
• Changi Airport Group: https://www.changiairport.com/
• Tourism Authority of Thailand: https://www.tourismthailand.org/