Chennai to London at a glance
The lowest fare our scanner has seen from Chennai to London in the last two weeks is ₹57,952 (return, 10 nights) for Sun 8 Nov, about the usual price.
Of the months we have prices for, November is the cheapest and December the dearest.
Nonstop flights take about 11h 30m on British Airways.
London has its best weather from May to September.
Nonstop: British AirwaysCommon stops: Abu Dhabi, Dubai, MumbaiCheapest airlines lately: Etihad, Emirates, Akasa Air, IndiGo
Month by month: fares, weather and what's on
The cheapest fare our scanner has seen in each month over the last two weeks (return, 10 nights), with London's weather and the dates that move prices. The live calendar at the top prices any month and trip length on demand.
| Month | Cheapest fare seen | Weather | Season | What's on |
|---|---|---|---|---|
| October 2026 | ₹60,935 return, 10 nights · Sat 17 Oct | 15° / 9°some rain, 81 mm | Shoulder | Dussehra |
| November 2026 | ₹57,952 return, 10 nights · Sun 8 Nov | 11° / 5°some rain, 72 mm | Off-season | Diwali |
| December 2026 | ₹73,903 return, 10 nights · Tue 22 Dec | 9° / 4°some rain, 70 mm | Peak | Christmas and New Year |
| January 2027 | ₹65,575 return, 10 nights · Wed 13 Jan | 8° / 2°some rain, 63 mm | Off-season | Christmas and New YearRepublic Day weekend |
| February 2027 | Check live above | 9° / 3°some rain, 54 mm | Off-season | Winter: dark by 4 pm, 3-9°C and damp. |
| March 2027 | ₹73,614 return, 10 nights · Sat 20 Mar | 11° / 4°some rain, 61 mm | Shoulder | HoliGood Friday weekendEaster |
| April 2027 | Check live above | 14° / 5°mostly dry, 41 mm | Shoulder | Indian summer holidays |
| May 2027Best weather | Check live above | 18° / 9°some rain, 55 mm | Shoulder | Indian summer holidays |
| June 2027Best weather | Check live above | 21° / 12°some rain, 57 mm | Peak | Indian summer holidaysWimbledon |
| July 2027Best weather | Check live above | 23° / 14°some rain, 62 mm | Peak | WimbledonStudent rush |
| August 2027Best weather | Check live above | 22° / 14°some rain, 51 mm | Peak | Student rush |
| September 2027Best weather | Check live above | 20° / 12°some rain, 65 mm | Shoulder |
Dates to plan around
Festivals and holidays in London, and the rushes that push up fares out of Chennai.
- 20 OctDussehraDussehra falls on Tuesday 20 Oct: many take the Monday off for a four-day weekend, so short trips abroad cost more that week.
- 6–10 NovDiwaliDiwali (Lakshmi Puja on Sunday 8 Nov): the busiest travel week of the autumn. Fares out of India rise, and short trips to Dubai, Bangkok and Singapore book up.
- 19 Dec – 3 JanChristmas and New YearThe priciest fortnight of the year to fly out of India: school holidays, Christmas and New Year all at once. Book early or go just before or after.
- 23–26 JanRepublic Day weekendRepublic Day falls on Tuesday 26 Jan: take the Monday off and it's a four-day weekend, so short trips abroad book up.
- 22–23 MarHoliHoli (22-23 Mar) and Good Friday (26 Mar) fall in the same week, a favourite week for short trips abroad, so fares rise.
- 26–28 MarGood Friday weekendGood Friday (26 Mar) makes a long weekend in India, just after Holi.
- 26–29 MarEasterGood Friday to Easter Monday: a long weekend across much of Europe and Australia, with Holy Week crowds in Rome; some shops and sights close on the day.
- 15 Apr – 15 Jun · expectedIndian summer holidaysSchool holidays (roughly mid-April to mid-June, varying by state): outbound family travel peaks and fares climb, especially to the Gulf, Southeast Asia and Europe.
- 28 Jun – 11 JulWimbledonThe tennis championships: London is busier, especially around the finals on 10-11 Jul.
- 20 Jul – 31 Aug · expectedStudent rushThousands of Indian students fly out for autumn intakes, so fares from India to the US, UK, Canada, Australia and Europe peak from late July through August.
Good to know
What is the cheapest month to fly from Chennai to London?
Of the months our scanner has priced, November 2026 is the cheapest: ₹57,952 (return, 10 nights) for Sun 8 Nov. Fares change daily; the live calendar at the top of this page prices every month on demand.
How long is the flight from Chennai to London?
Nonstop flights take about 11h 30m. Airlines flying nonstop include British Airways.
Which airlines fly from Chennai to London?
Recently the cheapest fares were on Etihad, Emirates, Akasa Air, IndiGo and Kuwait Airways.
When is the best time to visit London?
The best weather in London is from May to September. Spring: parks in bloom; mild but changeable, so bring layers. Peak season, with the most visitors and the highest hotel prices, is June to August and December. The quietest months are January to February and November.
How far ahead should I book Chennai to London flights?
At least five weeks ahead. Recently, on Europe routes, fares under 2 weeks before departure ran 5% above what the same flights cost five to seventeen weeks out.
When do fares out of Chennai go up?
Dussehra (20 Oct): Dussehra falls on Tuesday 20 Oct: many take the Monday off for a four-day weekend, so short trips abroad cost more that week. Diwali (6–10 Nov): Diwali (Lakshmi Puja on Sunday 8 Nov): the busiest travel week of the autumn. Fares out of India rise, and short trips to Dubai, Bangkok and Singapore book up. Christmas and New Year (19 Dec – 3 Jan): The priciest fortnight of the year to fly out of India: school holidays, Christmas and New Year all at once. Book early or go just before or after.