May is by far the best month, wherein you can get cheapest flights for Portland to Oklahoma City. Meanwhile, May is perceived as the expensive month due to the varying factors. That’s why it’s highly advised to make advanced online flight booking to save huge amounts of money.
May- During this month the footfall is less so, the flight is gradually inexpensive.
May - is the cheapest month to book round trip flights.
Cheapest Fare- Currently, this is the fare price based on the current demand.
Disclaimer - All the mentioned fares were found within last 48 hrs. The displayed fares are based on historical data and are subject to change. The fares cannot be guaranteed at the time of booking.

Portland
08:50
Portland International Airport [PDX]
Sun , 24 May 2026

Oklahoma City
16:05
Will Rogers World Airport [OKC]
Sun, 24 May 2026

Portland
15:30
Portland International Airport [PDX]
Sun , 24 May 2026

Oklahoma City
23:16
Will Rogers World Airport [OKC]
Sun, 24 May 2026

Portland
14:00
Portland International Airport [PDX]
Sun , 24 May 2026

Oklahoma City
21:05
Will Rogers World Airport [OKC]
Sun, 24 May 2026

Portland
06:40
Portland International Airport [PDX]
Sun , 24 May 2026

Oklahoma City
13:30
Will Rogers World Airport [OKC]
Sun, 24 May 2026

Portland
11:59
Portland International Airport [PDX]
Sun , 24 May 2026

Oklahoma City
19:39
Will Rogers World Airport [OKC]
Sun, 24 May 2026

Portland
15:15
Portland International Airport [PDX]
Wed , 09 Dec 2026

Oklahoma City
23:09
Will Rogers World Airport [OKC]
Wed, 09 Dec 2026

Portland
22:59
Portland International Airport [PDX]
Wed , 09 Dec 2026

Oklahoma City
11:46
Will Rogers World Airport [OKC]
Thu, 10 Dec 2026

Portland
08:45
Portland International Airport [PDX]
Wed , 09 Dec 2026

Oklahoma City
16:15
Will Rogers World Airport [OKC]
Wed, 09 Dec 2026











To crack the better offer on Portland to Oklahoma City flights, it’s better to make advanced bookings at least few weeks prior of your intended date because price might rise eventually due to the delay.