Popular airlines from Portsmouth to Hilo
Aer LingusAer Lingus
LufthansaLufthansa
British AirwaysBritish Airways
Turkish AirlinesTurkish Airlines
American AirlinesAmerican Airlines
Air SerbiaAir Serbia
Swiss International Air LinesSwiss International Air Lines
- Plan, book, fly with confidence
- Be in the knowGet alerts if flight prices drop or rise*
- Book smarterSave up to 15% on select hotels after you book a flight*
Find the cheapest month to fly from Boston (BOS) to Kailua-Kona (KOA)
September is typically the cheapest month to fly
From €325 - €477 per traveller.
Graph displaying average flight prices per month
Expedia's Latest Trends
Hotels
- Disney Hotel New York - The Art of Marvel
- Apartments Crosshaven
- Cabin Rentals Whistler
- Palm Beach - Excel Hotels & Resorts
- London Hilton on Park Lane
- Romantic Hotels in Killarney
- Hotels in Bardonecchia
- Arnolds Hotel
- Impressive Punta Cana
- YOTEL Manchester Deansgate
- AYA Seahotel – Adults Only
- Eurostars Grand Marina
- Luxury 3 Bedroomed Apartment- Stunning Views, Direct Marina Access & Shared Pool
- Jade Mountain Resort
- Hotels in Mountmellick
Flights
Activities
Holiday Rentals
*Available to Expedia members.