Popular airlines to Monmouth
- United
United
- Delta
Delta
- American Airlines
American Airlines
- Korean Air
Korean Air
- Japan Airlines
Japan Airlines
- Air Canada
Air Canada
- Cathay Pacific
Cathay Pacific
- Plan, book, fly with confidence
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Find the cheapest month to fly from Columbus (CMH) to Portland (PDX)
February is typically the cheapest month to fly
From HK$1,027 - HK$3,234 per traveller.