When is the cheapest time to book The Siam?

Across 43,520 tracked price checks, the cheapest booking window for The Siam has been 61–90 days before check-in, at a $691 median per night. The observed median nightly rate is $688. The lowest nightly median over the next year is $572, around September 25.

Median price trend for next 365 days
$572Min, Sep 25
$688Median
$1,871Max, Dec 28
Visible rangeSep 4 - Jun 3
$471$679$886$1.1K$1.3KSep 4Oct 31Dec 24Feb 15Apr 10Jun 3
Hover a dateSee price
Median hotel price chart
DateMedianRange
Sep 4, 2026$673$673 - $700
Sep 5, 2026$674$672 - $684
Sep 6, 2026$678$674 - $717
Sep 7, 2026$678$677 - $717
Sep 8, 2026$678$674 - $717
Sep 9, 2026$675$671 - $678
Sep 10, 2026$679$670 - $717
Sep 11, 2026$678$670 - $734
Sep 12, 2026$678$671 - $717
Sep 13, 2026$669$658 - $717
Sep 14, 2026$1,036$977 - $1,082
Sep 15, 2026$957$947 - $958
Sep 16, 2026$690$596 - $724
Sep 17, 2026$676$587 - $727
Sep 18, 2026$678$670 - $816
Sep 19, 2026$678$671 - $678
Sep 20, 2026$671$550 - $734
Sep 21, 2026$678$670 - $684
Sep 22, 2026$678$670 - $684
Sep 23, 2026$684$573 - $717
Sep 24, 2026$601$573 - $816
Sep 25, 2026$572$551 - $573
Sep 26, 2026$576$573 - $694
Sep 27, 2026$576$574 - $681
Sep 28, 2026$576$573 - $581
Sep 29, 2026$576$573 - $626
Sep 30, 2026$576$570 - $643
Oct 1, 2026$600$597 - $650
Oct 2, 2026$711$597 - $784
Oct 3, 2026$605$600 - $636
Oct 4, 2026$793$772 - $802
Oct 5, 2026$839$767 - $844
Oct 6, 2026$609$598 - $640
Oct 7, 2026$600$599 - $636
Oct 8, 2026$609$598 - $640
Oct 9, 2026$871$607 - $967
Oct 10, 2026$612$597 - $640
Oct 11, 2026$605$600 - $636
Oct 12, 2026$609$597 - $640
Oct 13, 2026$604$600 - $636
Oct 14, 2026$609$597 - $640
Oct 15, 2026$1,165$783 - $1,246
Oct 16, 2026$612$597 - $640
Oct 17, 2026$653$643 - $689
Oct 18, 2026$660$646 - $693
Oct 22, 2026$612$594 - $640
Oct 23, 2026$606$604 - $636
Oct 24, 2026$612$606 - $640
Oct 25, 2026$920$854 - $935
Oct 26, 2026$600$598 - $640
Oct 27, 2026$606$605 - $636
Oct 28, 2026$612$597 - $640
Oct 29, 2026$606$605 - $636
Oct 30, 2026$612$608 - $640
Oct 31, 2026$606$605 - $636
Nov 1, 2026$620$608 - $650
Nov 2, 2026$729$726 - $765
Nov 3, 2026$656$641 - $686
Nov 4, 2026$659$657 - $692
Nov 5, 2026$660$655 - $669
Nov 6, 2026$673$651 - $706
Nov 7, 2026$677$665 - $799
Nov 8, 2026$627$613 - $647
Nov 9, 2026$740$717 - $776
Nov 10, 2026$687$686 - $723
Nov 11, 2026$697$682 - $729
Nov 12, 2026$616$613 - $647
Nov 13, 2026$692$679 - $726
Nov 14, 2026$682$680 - $717
Nov 15, 2026$620$608 - $650
Nov 16, 2026$688$687 - $720
Nov 17, 2026$695$678 - $726
Nov 18, 2026$684$670 - $718
Nov 19, 2026$631$608 - $650
Nov 20, 2026$680$666 - $714
Nov 21, 2026$1,104$1,035 - $1,126
Nov 22, 2026$867$680 - $970
Nov 23, 2026$689$676 - $723
Nov 24, 2026$684$682 - $719
Nov 25, 2026$687$674 - $721
Nov 26, 2026$617$616 - $647
Nov 27, 2026$685$661 - $719
Nov 28, 2026$678$677 - $713
Nov 29, 2026$622$608 - $650
Nov 30, 2026$682$660 - $716
Dec 1, 2026$695$682 - $729
Dec 2, 2026$688$685 - $722
Dec 3, 2026$681$667 - $714
Dec 4, 2026$686$684 - $720
Dec 5, 2026$683$669 - $716
Dec 6, 2026$616$613 - $647
Dec 7, 2026$697$681 - $728
Dec 8, 2026$682$680 - $717
Dec 9, 2026$691$689 - $723
Dec 10, 2026$691$688 - $726
Dec 11, 2026$697$683 - $731
Dec 12, 2026$688$685 - $722
Dec 13, 2026$622$608 - $650
Dec 14, 2026$697$694 - $732
Dec 15, 2026$620$608 - $650
Dec 16, 2026$688$678 - $723
Dec 17, 2026$690$677 - $724
Dec 18, 2026$731$730 - $767
Dec 19, 2026$758$740 - $792
Dec 20, 2026$1,145$760 - $1,163
Dec 21, 2026$795$775 - $830
Dec 22, 2026$974$958 - $1,007
Dec 23, 2026$969$946 - $1,013
Dec 24, 2026$1,020$1,019 - $1,070
Dec 25, 2026$969$946 - $1,013
Dec 26, 2026$1,216$1,137 - $8,921
Dec 27, 2026$1,337$1,297 - $9,134
Dec 28, 2026$1,871$1,752 - $8,921
Dec 29, 2026$1,175$1,139 - $9,134
Dec 30, 2026$1,406$1,315 - $9,007
Dec 31, 2026$1,553$1,505 - $10,625
Jan 1, 2027$1,141$1,054 - $9,150
Jan 2, 2027$1,081$1,048 - $9,368
Jan 3, 2027$883$881 - $928
Jan 4, 2027$892$872 - $933
Jan 5, 2027$887$885 - $928
Jan 6, 2027$650$633 - $677
Jan 7, 2027$684$680 - $715
Jan 8, 2027$660$657 - $687
Jan 9, 2027$957$641 - $1,051
Jan 10, 2027$650$645 - $677
Jan 11, 2027$644$641 - $673
Jan 12, 2027$647$633 - $677
Jan 13, 2027$644$641 - $673
Jan 14, 2027$650$633 - $677
Jan 15, 2027$644$641 - $673
Jan 16, 2027$815$785 - $839
Jan 17, 2027$644$641 - $673
Jan 18, 2027$665$633 - $677
Jan 19, 2027$641$638 - $673
Jan 20, 2027$650$633 - $677
Jan 21, 2027$644$640 - $673
Jan 22, 2027$719$702 - $751
Jan 23, 2027$886$872 - $917
Jan 24, 2027$650$633 - $677
Jan 25, 2027$651$641 - $673
Jan 26, 2027$648$633 - $677
Jan 27, 2027$644$640 - $673
Jan 28, 2027$665$633 - $677
Jan 29, 2027$644$641 - $673
Jan 30, 2027$665$633 - $677
Jan 31, 2027$644$641 - $673
Feb 1, 2027$665$633 - $677
Feb 2, 2027$644$632 - $673
Feb 3, 2027$665$633 - $677
Feb 4, 2027$644$642 - $673
Feb 5, 2027$684$663 - $696
Feb 6, 2027$665$662 - $695
Feb 7, 2027$698$663 - $710
Feb 8, 2027$684$681 - $717
Feb 9, 2027$704$671 - $719
Feb 10, 2027$678$674 - $709
Feb 11, 2027$695$660 - $706
Feb 12, 2027$660$660 - $691
Feb 13, 2027$674$641 - $685
Feb 14, 2027$644$641 - $673
Feb 15, 2027$665$620 - $677
Feb 16, 2027$644$641 - $673
Feb 17, 2027$665$625 - $677
Feb 18, 2027$644$641 - $673
Feb 19, 2027$665$633 - $677
Feb 20, 2027$644$641 - $673
Feb 21, 2027$665$633 - $677
Feb 22, 2027$644$641 - $673
Feb 23, 2027$665$633 - $677
Feb 24, 2027$644$642 - $673
Feb 25, 2027$665$633 - $677
Feb 26, 2027$659$644 - $673
Feb 27, 2027$665$633 - $677
Feb 28, 2027$659$644 - $673
Mar 1, 2027$680$646 - $691
Mar 2, 2027$644$624 - $673
Mar 3, 2027$711$654 - $768
Mar 4, 2027$665$633 - $770
Mar 5, 2027$651$624 - $766
Mar 6, 2027$711$654 - $768
Mar 7, 2027$665$633 - $770
Mar 8, 2027$644$634 - $766
Mar 9, 2027$711$654 - $768
Mar 10, 2027$665$633 - $770
Mar 11, 2027$644$635 - $766
Mar 12, 2027$711$654 - $768
Mar 13, 2027$665$633 - $770
Mar 14, 2027$644$635 - $766
Mar 15, 2027$715$662 - $768
Mar 16, 2027$665$633 - $770
Mar 17, 2027$644$634 - $766
Mar 18, 2027$711$654 - $768
Mar 19, 2027$665$633 - $770
Mar 20, 2027$648$644 - $766
Mar 21, 2027$711$654 - $768
Mar 22, 2027$667$621 - $771
Mar 23, 2027$644$636 - $766
Mar 24, 2027$711$654 - $768
Mar 25, 2027$665$633 - $770
Mar 26, 2027$651$634 - $766
Mar 27, 2027$711$654 - $768
Mar 28, 2027$665$633 - $770
Mar 29, 2027$650$634 - $766
Mar 30, 2027$711$654 - $768
Mar 31, 2027$665$633 - $770
Apr 1, 2027$644$634 - $766
Apr 2, 2027$711$654 - $768
Apr 3, 2027$665$633 - $770
Apr 4, 2027$644$634 - $766
Apr 5, 2027$711$654 - $768
Apr 6, 2027$629$598 - $728
Apr 7, 2027$608$599 - $724
Apr 8, 2027$672$618 - $725
Apr 9, 2027$654$610 - $728
Apr 10, 2027$608$601 - $724
Apr 11, 2027$672$618 - $725
Apr 12, 2027$629$597 - $728
Apr 13, 2027$608$599 - $724
Apr 14, 2027$672$618 - $725
Apr 15, 2027$629$598 - $728
Apr 16, 2027$608$600 - $724
Apr 17, 2027$672$618 - $725
Apr 18, 2027$629$598 - $728
Apr 19, 2027$608$601 - $724
Apr 20, 2027$675$625 - $725
Apr 21, 2027$629$597 - $728
Apr 22, 2027$608$599 - $724
Apr 23, 2027$672$618 - $725
Apr 24, 2027$629$598 - $728
Apr 25, 2027$608$599 - $724
Apr 26, 2027$672$618 - $725
Apr 27, 2027$629$598 - $728
Apr 28, 2027$608$601 - $724
Apr 29, 2027$675$625 - $725
Apr 30, 2027$629$598 - $728
May 1, 2027$608$599 - $724
May 2, 2027$672$618 - $725
May 3, 2027$629$598 - $728
May 4, 2027$615$599 - $724
May 5, 2027$672$618 - $725
May 6, 2027$629$598 - $728
May 7, 2027$608$599 - $724
May 8, 2027$672$618 - $725
May 9, 2027$629$597 - $728
May 10, 2027$608$601 - $724
May 11, 2027$672$618 - $725
May 12, 2027$629$598 - $728
May 13, 2027$610$599 - $724
May 14, 2027$672$618 - $725
May 15, 2027$629$598 - $728
May 16, 2027$608$599 - $724
May 17, 2027$672$618 - $725
May 18, 2027$618$597 - $728
May 19, 2027$608$599 - $724
May 20, 2027$673$620 - $725
May 21, 2027$629$612 - $728
May 22, 2027$608$600 - $724
May 23, 2027$683$640 - $725
May 24, 2027$629$598 - $728
May 25, 2027$608$599 - $724
May 26, 2027$672$618 - $725
May 27, 2027$629$597 - $728
May 28, 2027$615$600 - $724
May 29, 2027$672$618 - $725
May 30, 2027$629$598 - $728
May 31, 2027$608$599 - $724
Jun 1, 2027$672$618 - $725
Jun 2, 2027$629$598 - $728
Jun 3, 2027$1,340$1,310 - $1,579

Observed sample summaries are historical price observations, not guaranteed availability.

Our review

Overall ratingA

The Siam is an ultra-luxury riverside sanctuary in Bangkok designed by Bill Bensley, blending Art Deco elegance with a private museum of rare antiquities. Reviewers consistently praise its exceptionally spacious suites, unparalleled butler service, and tranquil atmosphere that feels far removed from the city's frantic pace. While highly acclaimed for its design and hospitality, its secluded location means it functions best as a peaceful retreat rather than a base for intense sightseeing.

Best for

  • Art and design connoisseursThe property functions as a living museum, adorned with genuine antiques, vintage posters, and historical heirlooms from the owners' personal collection.
  • Couples seeking romanceThe secluded pool villas, tranquil riverside setting, and private boat transfers past historic temples offer an intimate and peaceful atmosphere.
  • Travellers prioritizing serviceThe dedicated 24-hour butler service and highly personalized care from the staff ensure an exceptionally high standard of hospitality.

Not ideal for

  • Active sightseers and shoppersThe hotel is located in the historic Dusit district, meaning taxi rides to central shopping malls and modern downtown districts can take up to an hour due to traffic.
  • Nightlife enthusiastsThe hotel's bars and restaurants close relatively early, which may limit guests looking for late-night dining and cocktail options.

Rating breakdown

  • B+LocationSituated in the quiet, historic Dusit district along the river, offering peace but requiring long taxi rides to reach central shopping areas.
  • A-RoomsExceptionally spacious suites and villas with bespoke antique decor, though minor plumbing issues like weak water pressure were occasionally noted.
  • A+ServiceExemplary 24-hour butler service and highly attentive management that anticipate guest needs flawlessly.
  • ADiningExcellent à la carte breakfasts and authentic Thai cuisine, though the menu can feel slightly repetitive during longer stays.
  • A+FacilitiesOutstanding amenities including a riverside pool, a professional Muay Thai boxing ring, a luxury spa, and a private cinema room.
  • A-ValuePremium pricing for rooms, dining, and spa treatments that aligns with the hotel's ultra-luxury positioning.

Verdict

The Siam is ideal for luxury travellers, art lovers, and couples seeking a quiet, museum-like sanctuary on the Chao Phraya River. It is less suited for those who want to be within walking distance of downtown shopping districts or prefer minimalist, modern interiors.

When to book

61–90 days in advance

Across observed booking windows, median prices range from $691 to $822. The spread is modest, so treat this as a directional signal rather than a strict rule.

Booking window medians

43,520 price checks - high confidence
0–1 days (last minute)$807
2–3 days$778
4–7 days$822
8–14 days (1–2 weeks)$798
15–30 days (2–4 weeks)$772
31–60 days (1–2 months)$706
61–90 days (2–3 months)$691
90+ days (3+ months)$706
City context

Compared with Bangkok

Its observed median is 190% above the Bangkok city median.

See the Bangkok timing chart

Frequently asked questions

How much does The Siam cost per night?

Observed nightly medians for The Siam center on $688, ranging from $572 on the cheapest dates to $1,871 at the peak.

Is The Siam cheaper last-minute or in advance?

Booking in advance has been cheaper: the 61–90 days window shows a $691 median per night, against $778 when booked 2–3 days before check-in.

Is The Siam cheaper on weekdays than on weekends?

The day of the week barely moves the price: the Sunday–Thursday median of $706 and the Friday–Saturday median of $707 differ by less than 5%. The cheapest check-in day has been Thursday.

What is the cheapest time of year to stay at The Siam?

Over the next year, October looks cheapest with nightly medians around $611, while June peaks at around $1,371.

When is The Siam most expensive?

The highest nightly median observed over the next year is $1,871, around December 28. By booking window, prices peak at a $822 median when booked 4–7 days before check-in.

How does The Siam compare with Bangkok hotel prices?

Its $688 observed median runs 190% above the Bangkok city median of $237.

Location

Bangkok

Map of The Siam in Bangkok

3/2 Thanon Khao, Vachirapayabal, Dusit, Bangkok, 10300, Thailand