Then you have to consider other factors:
- Does the second airline offer one-way award flights? (Some charge full round-trip pricing even if you only fly one way.)
- Do Amex Membership Rewards and SPG both offer transfers to the second airline?
- Are there fuel surcharges on the second airline? (Probably, yes.)
Both programs transfer to:
- Air Canada/Aeroplan
- All Nippon (ANA)
- British Airways
- Asia Miles (Cathay Pacific and 20 other partners)
- Flying Blue (Air France & KLM)
- Singapore Airlines
- Virgin Atlantic
Of those, Aeromexico and Hawaiian are useless.
Delta charges round-trip miles for one-way awards.
Alitalia charges more than 50% of a round-trip for one-way but adds fuel surcharges.
ANA, Asia Miles, British Airways and Virgin Atlantic are distance-based award charts. If you're on the East Coast, they may work. If not, they're expensive. BA and Virgin add fuel surcharges of $500-$750.
Air France/KLM and Singapore offer one-ways for 50% of the round trip cost and add fuel surcharges.If you can find Delta award space using Flying Blue miles, you can get a one-way flight and avoid the surcharges.
So, unless you spend a lot of time reading up on frequent flyer programs and the hotspots in each program, it's probably best to book a simple round-trip flight on a single airline. Stick with Chase, transfer the miles to United.
Final thought - United devalues their chart on February 1. Economy saver awards to Europe remain the same at 60k miles, round-trip, per person. If you can't find saver space on United, each ticket jumps from 110k to 130k miles. Economy awards on Star Alliance partners stay at 60k as well. Saver business class tickets on United jump from 100k to 110k and non-savers jump from 250k to 300k. Partner business class awards jump from 100k to 140k.
[RIGHT][size=100]- Sapphire Preferred - Freedom - Ink - Platinum - Everyday Preferred -[/size]