AirHint found the following cheapest return flights from Chicago (ORD) to London (LHR)
in May 2025 (see full year ).
Return flights
13 May
- 21 May
Spirit Airlines
$ 578
13 May
- 22 May
Spirit Airlines
$ 585
10 May
- 21 May
Spirit Airlines
$ 602
10 May
- 17 May
Spirit Airlines
$ 621
05 May
- 12 May
Spirit Airlines
$ 624
14 May
- 21 May
Spirit Airlines
$ 627
07 May
- 13 May
Aer Lingus
$ 636
04 May
- 13 May
Aer Lingus
$ 636
02 May
- 05 May
Icelandair
$ 643
06 May
- 13 May
Aer Lingus
$ 644
14 May
- 02 Jun
Spirit Airlines
$ 690
12 May
- 01 Jun
Spirit Airlines
$ 724
19 May
- 13 Jun
American Airlines
$ 724
20 May
- 02 Jun
Air Canada
$ 732
28 May
- 08 Jun
Air Canada
$ 759
27 May
- 10 Jun
Spirit Airlines
$ 771
12 May
- 01 Jun
Finnair
$ 771
direct
28 May
- 10 Jun
Spirit Airlines
$ 787
08 May
- 08 Jun
Aer Lingus
$ 789
29 May
- 03 Jun
jetBlue
$ 807
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.
