AirHint found the following cheapest return flights from Chicago (ORD) to London (LHR)
in May 2025 (see full year ).
Return flights
13 May
- 22 May
Air Canada
$ 614
13 May
- 20 May
Air Canada
$ 616
13 May
- 21 May
Air Canada
$ 617
13 May
- 22 May
Finnair
$ 638
direct
13 May
- 20 May
United
$ 642
direct
13 May
- 18 May
Aer Lingus
$ 657
20 May
- 03 Jun
Spirit Airlines
$ 662
13 May
- 18 May
Finnair
$ 687
direct
28 May
- 06 Jun
Spirit Airlines
$ 691
28 May
- 03 Jun
Spirit Airlines
$ 710
24 May
- 10 Jun
Spirit Airlines
$ 712
27 May
- 10 Jun
Spirit Airlines
$ 720
14 May
- 21 May
jetBlue
$ 723
28 May
- 11 Jun
Spirit Airlines
$ 724
14 May
- 28 May
jetBlue
$ 738
13 May
- 27 May
jetBlue
$ 738
24 May
- 07 Jun
Spirit Airlines
$ 745
31 May
- 08 Jun
Spirit Airlines
$ 748
17 May
- 03 Jun
Spirit Airlines
$ 749
29 May
- 04 Jun
Spirit Airlines
$ 766
Also check the deals for one-way flights from Chicago to London in May .
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers.
Only the cheapest flights are offered.
Select a price to book and secure these cheap prices.
