If you have plans to travel far on your bike this summer, you might want to invest the modest amount of $50 or around there and buy the following items:
Pump/CO2 adapter: $39, at any bicycle store
CO2 cartridges: $1 or $2 at any bicycle store or outdoors store
Tire plugging kit: $8 at Canadian tire
If you happen to get a flat in the middle of nowhere( like the Rockies for example), you will not be stranded. Plug your tire with the kit, then use the pump and 2 or 3 CO2 cartridges to reinflate it and Voila, you are back on the road. Replace the tire as soon as you get back to civilization. It's a very cheap and very compact solution to a potentially life threatening problem.(Getting stranded in the mountains is not fun).
Here is a pic of all the items. Put everything into a small plastic case( like a first aid box) and you're set to go. Don't expose the CO2 cartridges to extreme heat or they'll explode. Direct sun light is ok though.