I'm planning a trip from Denver to Portugal for next June. Price being relatively equal, I'm comparing the following:
- United Airlines with a 3-1/2 hour layover in Newark.
- Air Canada with a 4 hour layover in Montreal.
- Delta with a 2-3/4 hour layover in Boston.
I haven't been in any of these airports for a long time. Do you have any suggestions on how I should choose my flight? Thanks in advance!