AirHint found the following cheapest return flights from Oslo (OSL) to Istanbul (IST)
in August 2025 (see full year ).
Return flights
17 Aug
- 03 Sep
Norwegian
$ 140
direct
24 Aug
- 10 Sep
Norwegian
$ 159
direct
24 Aug
- 03 Sep
Norwegian
$ 169
direct
28 Aug
- 03 Sep
Pegasus Airlines
$ 172
direct
17 Aug
- 31 Aug
Norwegian
$ 219
direct
24 Aug
- 31 Aug
Norwegian
$ 248
direct
21 Aug
- 28 Aug
Air Serbia
$ 253
17 Aug
- 20 Aug
Norwegian
$ 256
direct
12 Aug
- 29 Aug
Pegasus Airlines
$ 271
21 Aug
- 28 Aug
Turkish Airlines
$ 272
direct
12 Aug
- 29 Aug
Turkish Airlines
$ 282
direct
06 Aug
- 20 Aug
Norwegian
$ 284
direct
24 Aug
- 07 Sep
Norwegian
$ 284
direct
06 Aug
- 17 Aug
Norwegian
$ 285
04 Aug
- 15 Aug
Pegasus Airlines
$ 326
Also check the deals for one-way flights from Oslo to Istanbul in August .
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.